A tractor-trailer vehicle combination is most likely to roll over when the configuration includes:

A. A 45 foot and a 27 foot trailer

B. Double 45 foot trailer.

C. Triple 28 foot trailers.

Answer: C. Triple 28 foot trailers.

After connecting the airlines, but before backing under the trailer, you should:

A. Supply air to the trailer system, then pull out the supply knob.

B. Make sure that the trailer brakes are off.

C. Walk around the rig to be sure it is clear.

Answer: A. Supply air to the trailer system, then pull out the supply knob.

Why should you be sure the fifth wheel plate is greased as required?

A. To insure good electrical connections

B. To prevent steering problems.

C. To reduce heat and noise.

Answer: B. To prevent steering problems.

Glad hands are used for connecting the:

A. Electric line from the tractor to the trailer.

B. Kingpin from the tractor to the locking jaws in the glide plate.

C. Service and emergency air lines from the tractor to the trailer.

Answer: C. Service and emergency air lines from the tractor to the trailer.

The S-Cam brake:

A. Pulls the brake shoes in away from the drum.

B. Pushes the brake shoes out against the drum.

C. Requires a power screw to operate.

Answer: B. Pushes the brake shoes out against the drum.

What does a Modulating Control Valve Do?

A. Controls the service brake.

B. Controls the ABS system.

C. Controls the spring brakes if the service brakes fail.

Answer: C. Controls the spring brakes if the service brakes fail.

What does ABS stand for?

A. All Brake System.

B. Air Bag Stabilizer.

C. Antilock Brake System.

Answer: C. Antilock Brake System.

What is a Modulating Control Valve?

A. Control handle on the dash.

B. Part of the ABS system.

C. Limits the braking by ½.

Answer: A. Control handle on the dash.

On large buses it is common for the low pressure warning devices to signal at ____psi.

A. 60-65

B. 70-75

C. 80-85

Answer: C. 80-85

Tractor and straight truck spring brakes will apply fully when air pressure drops to a range of ____psi.

A. 20-50

B. 30-45

C. 20-45

Answer: C. 20-45

A safety relief valve is used to protect the air system from too much air pressure. This valve is usually set to open at ____psi.

A. 130

B. 150

C. 160

Answer: B. 150

In air operated disc brakes, air pressure acts on a brake chamber and slack adjuster like s-cam brakes. Instead of the s-cam a ____ is used.

A. Brake Screw

B. Power Screw

C. Air Pressure Screw

Answer: B. Power Screw

In single air systems (pre-1975), air pressure should build from 50-90 psi within ____minutes.

A. 2

B. 3

C. 4

Answer: B. 3

Brake drums must not have cracks longer than ____the width of the friction area.

A. ¼

B. ½

C. 1/3

Answer: B. ½

When the engine is at operating RPM, the pressure should build up to 85 to 100 psi within ____in a dual air systems.

A. 45 seconds

B. 1 minute

C. 2 minutes

Answer: A. 45 seconds

The tractor air supply valve is what color?

A. Red

B. Yellow

C. Blue

Answer: B. Yellow

To charge/release the brakes with air, you:

A. Pull the valves out.

B. Push the valves in.

C. Leave the valves in the normal position.

Answer: B. Push the valves in.

Front brake limiting valves reduce the air pressure applied to the front brakes by:

A. ¼

B. 1/3

C. ½

Answer: C. ½

The difference between controlled braking and stab braking is:

A. Controlled braking is only used on wet pavement.

B. Controlled braking is for combination vehicles, stab braking is for single vehicles.

C. Controlled braking does not lock the wheels, stab braking involves locking the wheels.

Answer: C. Controlled braking does not lock the wheels, stab braking involves locking the wheels.

An air application gauge shows you:

A. How much air pressure is in your tanks.

B. How much air pressure you are applying to the brakes.

C. How much air pressure is escaping through your brake chamber.

Answer: B. How much air pressure you are applying to the brakes.

How often should the air tanks be drained?

A. When the brakes get spongy.

B. Once a week.

C. Daily.

Answer: C. Daily.

What happens when your brake drums get very hot?

A. They contract.

B. They start smoking.

C. They expand.

Answer: C. They expand.

Your truck or bus has a dual air brake system. If a low air pressure warning comes on for only one system, what should you do?

A. Reduce your speed and drive to the nearest DOT certified garage for repairs.

B. Reduce your speed and test the remaining system while under way.

C. Stop right away, safely park and continue only after the system is fixed.

Answer: C. Stop right away, safely park and continue only after the system is fixed.

Before driving a truck or bus with a dual air brake system, the pressure in each system should be at least ____psi.

A. 80

B. 100

C. 120

Answer: B. 100

The brake system that applies and releases the brakes when the driver uses the brake pedal is the ____brake system.

A. Emergency

B. Service

C. Parking

Answer: B. Service

Some air brake systems have an alcohol evaporator. What may happen if you don't keep the unit filled?

A. The s-cam may not rotate back when you release the brake pedal

B. Ice may form in the air storage tanks or air lines and cause the brakes to fail.

C. Ice may form on the brake drums and warp them.

Answer: B. Ice may form in the air storage tanks or air lines and cause the brakes to fail.

The parking or emergency brakes on a heavy vehicle can only be held in place by something that cannot leak away, such as:

A. Spring Pressure

B. Air Pressure

C. Hydraulic Pressure

Answer: A. Spring Pressure

If you must make an emergency stop, you should brake so you:

A. Can use the hand brake before the brake pedal.

B. Can steer and your vehicle stays in a straight line.

C. Can use the full power of the brakes to lock them up.

Answer: B. Can steer and your vehicle stays in a straight line.

Total stopping distance for air brakes is longer than for hydraulic brakes due to:

A. Brake lag.

B. Reaction time.

C. Effective braking.

Answer: A. Brake lag.

Under normal conditions, in order to engage the parking brakes, the driver must first:

A. Turn off the engine.

B. Let the air out of the air brake system.

C. Be sure that the air brake system is fully pressurized.

Answer: B. Let the air out of the air brake system.

The proper method of braking when going down long and/or steep grades, after selecting the proper gear, is to brake until your speed is about ____mph below your "safe" speed, then release your brakes.

A. 5

B. 10

C. 15

Answer: A. 5

Excessive use of the service brakes results in overheating, which can lead to:

A. Improper adjustment of the s-cam.

B. Increased contact between brake drums and brake linings.

C. Expansion of the brake drums.

Answer: C. Expansion of the brake drums.

If air pressure does not build up to normal within the correct amount of time, then:

A. You should be ready to use your parking brake to help stop.

B. The alcohol evaporator container may be low.

C. Your air pressure may drop too low during driving, requiring an emergency stop.

Answer: C. Your air pressure may drop too low during driving, requiring an emergency stop.

All air brake equipped vehicles have:

A. An air supply pressure gauge.

B. An air usage gauge.

C. A backup hydraulic system.

Answer: A. An air supply pressure gauge.

Which of these is not a proper time to apply the parking brakes?

A. If the brakes are very hot (e.g. just after coming down a steep grade).

B. If you will only be stopped for less than one hour.

C. If you are going to test the parking brake and make sure that it holds the vehicle.

Answer: A. If the brakes are very hot (e.g. just after coming down a steep grade).

Emergency controlled braking is when you:

A. Apply the brakes as hard as you can without locking up the wheels.

B. Brake as hard as you can, release the brakes when the wheels lock, and put the brakes back on again when the wheels start rolling.

C. Apply the hand valve for one second, then push hard on the brake pedal.

Answer: A. Apply the brakes as hard as you can without locking up the wheels.

How should you check that your service brakes are working properly?

A. Park on a slight grade, drain off the air pressure, set the parking brakes, check movement.

B. Park on level ground, chock wheels, engage the parking brake when you have the correct amount of air pressure, shut off the engine.

C. Park on level ground, wait for normal air pressure, release the parking brake, move forward slowly and apply the brakes firmly using the brake pedal.

Answer: C. Park on level ground, wait for normal air pressure, release the parking brake, move forward slowly and apply the brakes firmly using the brake pedal.

Air brake lag distance at 55 MPH adds about ____feet to your stopping distance.

A. 12

B. 32

C. 52

Answer: B. 32

If you are driving down a steep down grade and have reached a "safe" speed of 40 miles per hour, you would apply the service brake until your speed drops to ____miles per hour.

A. 25

B. 30

C. 35

Answer: C. 35

How should you check spring brake application when air drops below a certain level?

A. Park on a slight incline, drain off air pressure, set parking brakes and check movement.

B. Park on level ground, chock wheels, release the parking brake when you have enough pressure, shut the engine off and repeatedly press and release the brake pedal.

C. Park on level ground, wait for normal air pressure, release the parking brake, move the truck forward slowly and apply the brakes firmly using the brake pedal.

Answer: B. Park on level ground, chock wheels, release the parking brake when you have enough pressure, shut the engine off and repeatedly press and release the brake pedal.

The air loss rate for a straight truck or bus with the engine off and the brakes on should not be more than:

A. 1 psi in one minute

B. 2 psi in 45 seconds

C. 3 psi in one minute

Answer: C. 3 psi in one minute

For air brake systems in good condition, the air compressor should start pumping at about ___psi:

A. 100

B. 125

C. 150

Answer: A. 100

The stop light switch:

A. Turns on the brake lights to warn other drivers behind you.

B. Tells you when you need to use your emergency brakes.

C. Tells you when the air brake system is low on air pressure.

Answer: A. Turns on the brake lights to warn other drivers behind you.

The air compressor governor controls:

A. When air is pumped into the tanks.

B. The speed of the air compressor.

C. Air pressure applied to the brakes.

Answer: A. When air is pumped into the tanks.

In air brake equipped vehicles, the parking brakes should be used:

A. As little as possible.

B. Anytime the vehicle is parked.

C. To hold down your speed when going downhill.

Answer: B. Anytime the vehicle is parked.

The most important thing to do when a low pressure warning comes on is:

A. Upshift

B. Down shift

C. Stop and safely park ASAP

Answer: C. Stop and safely park ASAP

If your truck has a dual air brake system and one of the systems is low on pressure:

A. The manual slack adjusters on the s-cam brakes are not set properly.

B. The brake drums will not be fully operational.

C. Either the front or rear brakes will not be fully functional.

Answer: C. Either the front or rear brakes will not be fully functional.

The most common type of foundation brake found on heavy vehicles is:

A. Wedge Drum

B. Disc Brake

C. S-Cam Drum

Answer: C. S-Cam Drum

Emergency stab braking is when you:

A. Press hard on the brake pedal and apply full pressure on the hand valve until you stop.

B. Use light steady pressure on the brake pedal.

C. Brake as hard as you can, release the brakes when the wheels lock up and put the brakes on again when the wheels start rolling.

Answer: C. Brake as hard as you can, release the brakes when the wheels lock up and put the brakes on again when the wheels start rolling.

Parking or emergency brakes on trucks or buses can be legally held on by ____pressure.

A. Spring

B. Fluid

C. Air

Answer: A. Spring

To check the free play of manual slack adjusters of s-cam brakes, you should:

A. Park on level ground and apply the parking brakes.

B. Park on a slight grade, release the parking brakes, apply the service brakes and watch for vehicle movement.

C. Park on level ground, chock wheels, release parking brakes and pull on the slack adjusters.

Answer: C. Park on level ground, chock wheels, release parking brakes and pull on the slack adjusters.

The brake pedal in an air brake system:

A. Controls the speed of the air compressor.

B. Controls the air pressure applied to put on the brakes.

C. Is connected to slack adjusters by a series of rods and linkages.

Answer: B. Controls the air pressure applied to put on the brakes.

If your truck or bus has dual parking control valves, you can use pressure from a separate tank to:

A. Balance the service brake system when you are parked.

B. Stay parked twice as long without using up service air pressure.

C. Release the emergency/spring/parking brakes to move a short distance.

Answer: C. Release the emergency/spring/parking brakes to move a short distance.

The driver must be able to see a low air pressure warning which comes on before the pressure in the service air tank falls below _____psi.

A. 40

B. 60

C. 80

Answer: B. 60

Repeatedly pressing and releasing (fanning) the brake pedal may result in:

A. A loss of air pressure.

B. A buildup of brake air pressure.

C. No change in brake air pressure.

Answer: A. A loss of air pressure.

If the spring brakes are on, when should you push the brake pedal?

A. Only when driving down a hill.

B. Only on a slippery road.

C. Never.

Answer: C. Never.

You should know that your brakes are fading when:

A. You have to push harder on the brake pedal to control your downhill speed.

B. The brake pedal feels spongy when you apply pressure.

C. Pressure on the brake pedal is released and speed increases.

Answer: A. You have to push harder on the brake pedal to control your downhill speed.

What color is the ABS light?

A. Red

B. Yellow

C. Blue

Answer: B. Yellow

In very hot weather tar rises to the surface of the pavement. What is this known as?

A. Sweating

B. Puddling

C. Bleeding

Answer: C. Bleeding

You are not sure what extinguisher to use on a hazardous materials fire you should:

A. Use water to extinguish the fire.

B. Throw dirt on the fire to smother it.

C. Wait for qualified fire fighters.

Answer: C. Wait for qualified fire fighters.

Freeway exits can be dangerous for heavy vehicles. At what speed should you enter the exit?

A. At the posted speed.

B. Whatever speed you feel comfortable with.

C. At least 5 mph below the posted speed limit.

Answer: C. At least 5 mph below the posted speed limit.

How often should you check your mirrors for a lane change?

A. After you have signaled and after you complete the lane change.

B. You should not have to check your mirrors more than 3 times.

C. Before you change lanes, after you have signaled, after you start the lane change and after you complete the lane change.

Answer: C. Before you change lanes, after you have signaled, after you start the lane change and after you complete the lane change.

If you have a road emergency and must park on the shoulder, how soon should you put out your triangles?

A. 10 minutes

B. 20 minutes

C. 30 minutes

Answer: A. 10 minutes

A full stop at a railroad crossing is required when:

A. The nature of the cargo makes a stop mandatory under state or federal regulations.

B. The crossing is located in a city or town with frequent train traffic.

C. There are no flagmen, warning signals or gates at the crossing.

Answer: A. The nature of the cargo makes a stop mandatory under state or federal regulations.

For a first offence of driving a commercial vehicle under the influence of alcohol or drugs, you will lose your CDL for at least ____.

A. 6 months

B. 1 year

C. 2 years

Answer: B. 1 year

When driving in cold weather, your tire tread should:

A. Be checked every 100 miles or every 2 hours.

B. Be double the depth required in normal weather.

C. Provide enough traction to be able to steer and push the vehicle through snow.

Answer: C. Provide enough traction to be able to steer and push the vehicle through snow.

Your brakes can get wet when you drive thru heavy rain, what can this cause when brakes are applied?

A. Hydroplaning

B. Excessive brake wear

C. Trailer jack knife

Answer: C. Trailer jack knife

Convex (curved or spot) mirrors:

A. Make objects appear larger than they really are.

B. Make objects appear closer than they really are.

C. Show a wider area than flat mirrors show.

Answer: C. Show a wider area than flat mirrors show.

Backing a commercial vehicle is:

A. Always dangerous.

B. Not dangerous if you have a helper.

C. Not dangerous if you do not have to turn.

Answer: A. Always dangerous.

What is the term for a commercial vehicles habit of swinging wide on turns?

A. Off tracking

B. Wide rounding

C. Side winding

Answer: A. Off tracking

On which fires can you use water?

A. Electrical

B. Gasoline

C. Tires

Answer: C. Tires

Which of these is not part of the Pre-Trip inspection of the engine compartment?

A. Engine oil level.

B. Valve clearance.

C. Worn electrical wiring.

Answer: B. Valve clearance.

You are driving a vehicle at 55 mph on dry pavement, about how much total stopping distance will you need to bring it to a stop?

A. Half the length of a football field.

B. Twice the length of the football field.

C. The length of a football field.

Answer: C. The length of a football field.

You are driving a heavy vehicle, you must exit a highway using an off ramp that curves downhill, you should:

A. Slow down to a safe speed before the curve.

B. Slow to the posted speed limit for the off ramp.

C. Wait until you are in the curve before down shifting.

Answer: A. Slow down to a safe speed before the curve.

What should you do if you are unsure whether you have enough overhead clearance?

A. Slow down slightly and try to drive under the object.

B. Find another route that will not require driving under the object.

C. Estimate the height of an overhead object if it is posted.

Answer: B. Find another route that will not require driving under the object.

A car suddenly cuts in front of you, creating a hazard. What should you not do?

A. Honk and stay close behind the car.

B. Slow down to prevent a crash.

C. Signal and change lanes to avoid the car.

Answer: A. Honk and stay close behind the car.

Placards must be:

A. Displayed on all vehicles hauling any amount of hazardous materials.

B. Placed only on the front and rear of the vehicle.

C. Placed on all four sides of the vehicle

Answer: C. Placed on all four sides of the vehicle

You are starting your vehicle in motion from a stop, as you apply power to the drive wheels, they start to spin, you should:

A. Take your foot off the accelerator.

B. Take your foot off the accelerator and gently apply the brakes.

C. Try a lower gear.

Answer: A. Take your foot off the accelerator.

Whenever you double your speed, your vehicle has about ____times more destructive power.

A. 2

B. 3

C. 4

Answer: C. 4

In your mirror, you can see a car approaching from the rear, the next time you check your mirror, you do not see the car. You wish to change lanes, you should:

A. Wait to change lanes until you are sure the car isn't in your blind spot.

B. Ease into the other lane very slowly so the car can get out of the way if it is beside you.

C. Assume the car left the road and change lanes as normal.

Answer: A. Wait to change lanes until you are sure the car isn't in your blind spot.

Containerized loads:

A. Should come with their own tie down devices or locks.

B. Are generally used when freight is carried part way by rail, ship or air.

C. Do not require inspection or special securing by the driver.

Answer: B. Are generally used when freight is carried part way by rail, ship or air.

When you are parked at the side of the road at night, you must:

A. Put out your emergency warning devices within 30 minutes.

B. Turn on your 4-way flashers to warn others.

C. Use your tail lights to give warning to other motorists.

Answer: B. Turn on your 4-way flashers to warn others.

Most serious skids result from:

A. Turning sharply.

B. Decelerating too fast.

C. Driving too fast for conditions.

Answer: C. Driving too fast for conditions.

You can see a marking on a vehicle ahead of you. The marking is a red triangle with an orange center. What does the marking mean?

A. It is being driven by a student driver.

B. The vehicle is hauling hazardous material.

C. It may be a slow moving vehicle.

Answer: C. It may be a slow moving vehicle.

Why is a broken exhaust system dangerous?

A. Poison fumes could enter the cab or sleeper berth.

B. You could pollute the air with exhaust smoke.

C. Loud noise could damage the driver's ears.

Answer: A. Poison fumes could enter the cab or sleeper berth.

You should signal continuously while turning because?

A. You need both hands on the wheel to turn safely.

B. It is illegal to turn off your signal before completing a turn.

C. Most vehicles have self-canceling signals.

Answer: A. You need both hands on the wheel to turn safely.

During a vehicle inspection, checking the ____will not help prevent fires?

A. Cargo ventilation.

B. Battery fluid level.

C. Electrical system insulation.

Answer: B. Battery fluid level.

Which of these pieces of emergency equipment must always be carried in your vehicle?

A. Circuit breakers.

B. First aid kit.

C. Warning devices for parked vehicles.

Answer: C. Warning devices for parked vehicles.

Why will your vehicle's speed naturally increase on downgrades?

A. The engine run's smoother

B. Gravity

C. Lack of traction

Answer: B. Gravity

What is the proper way to hold a steering wheel?

A. With both hands close together, near the top of the wheel.

B. With both hands close together, near the bottom of the wheel.

C. With both hands on opposite sides of the wheel.

Answer: C. With both hands on opposite sides of the wheel.

Which of the following is not a characteristic of a front tire failure?

A. Steering wheel twisting.

B. Vehicle fishtail.

C. Difficult steering.

Answer: B. Vehicle fishtail.

If you have to make a vehicle inspection report, you must sign it:

A. When any defects are noted, whether they are certified to be repaired or not.

B. Only when defects are noted that are certified to be repaired.

C. Only when defects are noted that are certified to not need repairs.

Answer: A. When any defects are noted, whether they are certified to be repaired or not.

Which of these should be tested while the vehicle is stopped?

A. Service brakes

B. Parking brakes

C. Hydraulic brakes

Answer: B. Parking brakes

Implied consent means:

A. It is understood that you may drink when you are not driving.

B. You have given your consent to inspection of your vehicle for alcohol.

C. You have given your consent to be tested for alcohol in your blood.

Answer: C. You have given your consent to be tested for alcohol in your blood.

Stab braking should not be used on vehicles with:

A. Trailers

B. Hazardous materials

C. Anti-lock brakes

Answer: C. Anti-lock brakes

You should avoid driving thru deep puddles or flowing water. If you must, which of these steps can help keep your brakes working?

A. Apply hard pressure on the brake pedal and accelerator after coming out of the water.

B. Gently putting on the brakes while driving through the water.

C. Turning on your brake heaters.

Answer: B. Gently putting on the brakes while driving through the water.

Which of these is a good thing to do when driving at night?

A. Keep your speed slow enough that you can stop within the distance of your head lights.

B. Look directly at on-coming headlights, but only briefly.

C. Keep your dash instrument lights bright.

Answer: A. Keep your speed slow enough that you can stop within the distance of your head lights.

When a coolant container is part of a pressurized system, which of these is true?

A. The radiator cap can be safely removed and coolant added while the engine is hot.

B. You never need to check the antifreeze in such a system.

C. You can check the coolant level of a hot engine.

Answer: C. You can check the coolant level of a hot engine.

The total weight of a powered unit, the trailer and the cargo is called:

A. Gross vehicle weight.

B. Gross combination weight.

C. Gross axle weight.

Answer: B. Gross combination weight.

Which of these systems should receive extra attention during a winter weather inspection?

A. Exhaust

B. Steering

C. Suspension

Answer: A. Exhaust

Which of the following items are not checked in a pre-trip inspection?

A. Whether all vehicle lights are working, clean and the proper color.

B. Cargo security.

C. Amount of fuel in the vehicle.

Answer: C. Amount of fuel in the vehicle.

When hydraulic brakes fail while driving, the system will not build up pressure and the brake pedal will feel spongy or go to the floor. What action should you take?

A. Push down on the brake pedal as hard as you can.

B. Pump the brake pedal to generate pressure.

C. Put the vehicle in neutral and set the parking brake.

Answer: B. Pump the brake pedal to generate pressure.

You are driving a 40 foot vehicle at 35 mph, the road is dry and visibility is good. What is the least amount of space that you should keep in front of your vehicle to be safe?

A. 3 Seconds

B. 4 Seconds

C. 5 Seconds

Answer: B. 4 Seconds

Which of these happens when a tire blows out at highway speed?

A. Vibrating feeling.

B. Hissing sound

C. Rapid drop in speed to less than 20 mph.

Answer: A. Vibrating feeling.

What does emergency braking mean?

A. Using the vehicles emergency brake.

B. Responding to a hazard by slowing the vehicle.

C. Pushing down the brake pedal as hard as you can.

Answer: B. Responding to a hazard by slowing the vehicle.

To determine Blood Alcohol Concentration (BAC) for a person, it is necessary to know:

A. How often the person drinks alcohol (tolerance level).

B. The age of the person drinking.

C. How much the person weighs.

Answer: C. How much the person weighs.

Which of these statements are true about bad weather and driving conditions?

A. The road is more slippery as rain continues than when it begins.

B. When the temperature drops, bridges will freeze before the road surface.

C. Driving conditions become more dangerous as the temperature rises above freezing.

Answer: B. When the temperature drops, bridges will freeze before the road surface.

According to the CDL Drivers Manual, why should you limit the use of your horn?

A. On vehicles with air brakes, it can use air pressure that may be needed to stop.

B. You should keep both hands tightly gripping the wheels at all time.

C. It can startle other drivers.

Answer: C. It can startle other drivers.

You are driving a vehicle that can safely be driven at 55 mph on an open road. Traffic is now heavy, moving at 35 mph though the speed limit is 55 mph, the safest speed for your vehicle is most likely:

A. 25 mph

B. 35 mph

C. 45 mph

Answer: B. 35 mph

Which of these are correct about emergency or evasive actions?

A. Stopping is always the safest thing to do in an emergency.

B. In order to turn quickly, you must have a firm grip on the steering wheel.

C. You can usually stop more quickly than you can turn to miss an obstacle.

Answer: B. In order to turn quickly, you must have a firm grip on the steering wheel.

Which of these lights cannot be checked at the same time?

A. Head lights, Brake lights, and Clearance lights.

B. Turn signals, Tail lights, and Clearance lights.

C. Turn signals, Brake lights, and Four-way flashers

Answer: C. Turn signals, Brake lights, and Four-way flashers

If you need to leave the road due to a traffic emergency, you should:

A. Try to get all of the wheels off the pavement.

B. Avoid braking until your speed has dropped to about 20 mph.

C. Avoid the shoulder because most shoulders will not support a large vehicle.

Answer: B. Avoid braking until your speed has dropped to about 20 mph.

Which of these are true about your overhead clearance?

A. Paving a road does not affect the clearance height under bridges or overpasses.

B. The weight of the cargo can change the height of the vehicle.

C. Warnings are always posted for low clearance areas like bridges or overpasses.

Answer: B. The weight of the cargo can change the height of the vehicle.

Which of these is true about rear wheel braking skids?

A. Locked wheels usually have more traction than rolling wheels.

B. Front wheels slide sideways to try to catch up with rear wheels.

C. On vehicles with trailers, the trailer can push the towing vehicle sideways.

Answer: C. On vehicles with trailers, the trailer can push the towing vehicle sideways.

Which of these is true regarding the use of drugs while driving?

A. Prescription drugs are allowed if the drugs will not affect safe driving ability.

B. No prescription or non-prescription drugs are allowed at any time, for any reason.

C. Use of amphetamines like "speed" is allowed if you are using the drugs to stay awake.

Answer: A. Prescription drugs are allowed if the drugs will not affect safe driving ability.

If you are not sure what to use to put out a hazardous materials fire, you should:

A. Use water

B. Use dirt.

C. Wait for qualified firefighters.

Answer: C. Wait for qualified firefighters.

When passing another vehicle, pedestrian, or bicyclist, you should assume that:

A. They know you want to pass.

B. They see your vehicle because it is so large.

C. They may move into your traffic lane.

Answer: C. They may move into your traffic lane.

Which of these is usually true about driving in tunnels?

A. Law requires headlights.

B. There may be crosswinds when exiting.

C. Speeds are limited to 30 mph or less

Answer: B. There may be crosswinds when exiting.

Which of these is especially true about driving in hot weather?

A. You should check tire mounting and pressure before driving.

B. If a tire is too hot to touch, you should hose it down with water.

C. A small amount of air should be let out so air pressure remains steady.

Answer: A. You should check tire mounting and pressure before driving.

The purpose of retarders is to:

A. Help slow the vehicles while driving to reduce brake wear.

B. Apply extra braking power to the non-drive axles.

C. Help prevent skids.

Answer: A. Help slow the vehicles while driving to reduce brake wear.

Which of these statements about causes of vehicle fires are true?

A. Under-inflated tires will not cause a vehicle fire.

B. Carrying a properly charged fire extinguisher will help prevent fires.

C. Poor trailer ventilation can cause cargo to catch fire.

Answer: C. Poor trailer ventilation can cause cargo to catch fire.

Which of these would probably NOT help if your windshield were covered with ice?

A. Scraper

B. Brush

C. Defroster

Answer: B. Brush

Extra care is needed to keep your vehicle centered in your lane because commercial vehicles?

A. Are often wider than other vehicles.

B. Tend to sway from side to side.

C. Require a lot of room to change lanes.

Answer: A. Are often wider than other vehicles.

Where must you keep shipping papers when transporting hazardous materials?

A. Under the driver seat.

B. In the pouch on the driver door or in the seat.

C. In the glove compartment, with it locked.

Answer: B. In the pouch on the driver door or in the seat.

After starting the engine:

A. The coolant temperature gauge should begin a gradual rise to normal.

B. The oil pressure should take 3-5 min. to rise to normal.

C. The engine temperature gauge will take 3-5 min. to rise to normal.

Answer: A. The coolant temperature gauge should begin a gradual rise to normal.

Which of these is not a good rule when caring for injuries at an accident scene?

A. If a qualified person is helping, stay out of the way unless asked to assist.

B. Move severely injured persons if there is a danger due to fire or passing traffic.

C. Keep the injured persons cool.

Answer: C. Keep the injured persons cool.

How does vehicle weight effect stopping?

A. Empty trucks take longer to stop than loaded ones, but this is not always the case for buses.

B. It doesn't, brakes work the same no matter the weight of the vehicle for trucks or buses.

C. Loaded trucks take longer to stop. Buses loaded with passengers stop in less distance.

Answer: A. Empty trucks take longer to stop than loaded ones, but this is not always the case for buses.

You are checking your steering and exhaust systems during a pre-trip inspection. Which of these problems if found, should be fixed before the vehicle is driven?

A. Oil on the tie rod

B. Black smoke from the exhaust pipe.

C. Steering wheel play of more than 10 degrees (2" on a 20" wheel).

Answer: C. Steering wheel play of more than 10 degrees (2" on a 20" wheel).

What three things add up to total stopping distance for your truck or bus?

A. Attention distance, Reaction distance, Slowing distance.

B. Observation distance, Response distance, Braking distance.

C. Perception distance, Reaction distance, Effective braking distance.

Answer: C. Perception distance, Reaction distance, Effective braking distance.

Merging onto a road is safest if you:

A. Inch over into the nearest lane so other vehicles will give you room.

B. Gain speed on the shoulder and when merge into your lane.

C. Wait for a large enough gap in traffic to enter the roadway.

Answer: C. Wait for a large enough gap in traffic to enter the road.

All drivers, during rain, snow, and ice, must have:

Answer: wipers and headlights on

As of May 1st, 2010, all GDL drivers holding a special learners permit, examination permit, or a probationary license when operating a car must:

Answer: display a reflective red decal on both front and rear license plates

Is it legal to turn right on red if you can?

Answer: (YES) Make a full stop, check traffic

A child under the age of eight and who are less than 57 inches (four foot nine inches) tall must be properly belted and:

Answer: seated in the rear seat of the car unless there is no rear seat, the front seat will be allowed

To make a safe right turn you should:

Answer: approach the intersections as far right as possible

If a person has been drinking, which of the following can sober them up?

Answer: Time

Altering a driver's license, or showing an altered driver's license may result in:

Answer: loss of driving privileges, up to $100 fine, up to six months in jail

When parking a vehicle uphill, the wheels should be:

Answer: turned away from the curb

How much is the fine for violation of any of the restrictions of the GLD permit/license?

Answer: $100

After two, three, or four drinks, alcohol begins to impair your:

Answer: vision and judgement, coordinate and balance, and reaction time

A driver is on probation for:

Answer: one year

If you go into a skid, you should:

Answer: take your foot off the gas pedal

The purpose of the road test is to make sure the applicant understands the rules of the road and the safety of driving. Therefore, the applicant may be tested on:

Answer: steering properly, nearing corners, stopping and turning

Before practice driving is permitted, the permit holder must pass the required MVC's knowledge test and vision exam, have a valid permit and obtain:

Answer: two red reflective decals, one for each license plate

A motorist should never stop or park in front of a public or private driveway:

Answer: unless directed to do so by a police officer

During bad weather conditions, a truck takes longer to stop. This can be as much as:

Answer: 25% more

Getting a drivers license illegally may result in:

Answer: A fine of $250-$500 and/or imprisonment of 30-90 days

Excluding dependents, how many passengers may accompany the holder of a validated GDL Special Learners Permit in the car?

Answer: One

To safely share the road with large trucks or buses, you must know:

Answer: the limitations of these vehicles regarding visibility, stopping distance, and manueverablility

If you drivers license is lost, or stolen you should immediately notify the:

Answer: police

When sharing the road with large trucks or buses you should:

Answer: maintaining speed, leave space when stopping, give more road space

Upon completion of a GDL requirements (one year of unsupervised driving) the holder of a probationary license must:

Answer: visit any MVC agency to obtain and unrestricted basic license

What are some of the measures a motorist must take in order to secure the safety of all pedestrians?

Answer: Yield at crosswalks, be alert and obey speed limits, never pass a vehicle that has stopped to yield a pedestrians

Driving under the influence of intoxicating beverages:

Answer: your sense of judgement are impaired by alcohol

During a probationary period, a motorist must enroll in a probationary driving school program when:

Answer: accumulating two or more points

Road surfaces are most slippery when:

Answer: during the first few minutes of rainfall

The meaning of a hand signal is when a driver's hand and arm are straight out is a:

Answer: left turn

Who is required by the GLD law to wear a seat belt in the car?

Answer: The driver and all passengers

If you drink and have a BAC of above .05%, the risk of you causing an accident is:

Answer: doubled

To maintain a proper following distance when driving, you should stay at least:

Answer: three seconds behind the vehicle in front of you

If you drink and a BAC of above .05%, the risk of you causing an accident is doubled and when it reaches .10% it is:

Answer: six times as great

What color(s) are used to alert motorists they must share the road with pedestrians and bicyclists?

Answer: Yellow-orange

Any change of address must be reported to the MCV within what time period?

Answer: One week

When pavement is marked with two center-lines, one solid and one broken:

Answer: you may pass only on the broken side

Drugs that may affect driving skills are:

Answer: cold pills, tranquilizers, some prescription drugs

When two or more roads join and there is no signal, it is a good practice to:

Answer: Reduce speed and be ready to stop

When approaching or nearing an uncontrolled intersection, you should:

Answer: reduce speed and be ready to stop

When approaching a railroad crossing with flashing red lights you must:

Answer: stop at least 15ft from the crossing

A probationary driver under 21 is allowed to have how many people in the vehicle?

Answer: One additional unless accompanied by a guardian

Under NJ laws, motorists signalling a right turn must yield to who?

Answer: Pedestrians, bicyclists, inline skaters, and skateboarders

At the time of your road test, you should present?

Answer: Valid I.D. insurance card, vehicle registration, examination permit

When driving around a curve, the vehicle may tend to?

Answer: Keep going straight

In extreme cases, an aggressive driver may:

Answer: cause accidents

Which of the following actions could lead to distracted driving?

Answer: Adjusting the radio, eating, using electronic devices

If under 21, NJ laws state that you may be under the influence if your blood alcohol level is.

Answer: More than 0.01

In the city driving, you should?

Answer: Drive slower, watch for people, and look at least 12 seconds ahead of you

You may not park within how many feet of a stop sign?

Answer: 50ft

To make sure the kingpin and fifth wheel connection are secure, what should you do?

Answer: Slowly drive forward with the trailer brakes locked

When testing the trailer emergency brakes, you should charge the air brakes system, check that the trailer rolls freely and?

Answer: Pull out the trailer air supply control.

During a walk around inspection, what is the position of the pintle hook and the dolly air drain valve?

Answer: Closed, and Latched

The trailer air supply "Controls or Supplies" what?

Answer: Supplies the trailer with air.

Why do you need a tractor protection valve?

Answer: It keeps air in the tractor if the trailer breaks away or develops a bad leak.

When the fifth wheel locking lever is almost in the locking position but will not lock, what should you do?

Answer: Have it repaired before driving.

The standard following distance behind other vehicles is?

Answer: At least one second for each ten feet of vehicle length plus another second if going over 40 mph.

Why are "bobtail" tractors harder to stop?

Answer: Because the vehicle is "lighter"

You need how " " times more stopping disatance when stopping a combination at 40 miles per hour than at 20 miles per hour?

Answer: FOUR times

In coupling, where should the tractor be lined up?

Answer: Slightly to the right of the trailer.

Fully loaded rigs are how many" " times more likely to rollover in a crash than empty rigs?

Answer: 10

What should you keep lubricated to keep from having "steering" problems because of friction between tractor and trailer?

Answer: FIFTH WHEEL PLATE

What will happen if the service and emergency air lines are crossed when hooking up an old trailer, what will happen?

Answer: You will be able to drive away, but you won't have trailer brakes.

What should you do when lowering the landing gear of a loaded trailer?

Answer: Turn the crank in low gear a few extra turns after the landing gear makes firm contact with ground.

In checking that the spring brakes come on automatically you should not?

Answer: Pull the parking brake control knob.

When should you not use the parking brakes?

1. If the brakes are very hot

2. If the brakes are wet during freezing weather

3. When testing the spring brakes

Before driving a vehicle with a dual air system, allow time for the air compressor to build up to 100 psi pressure in which of the following?

Answer: Both the primary and secodary systems

On trailer air lines, the service line is connected to "what" on the trailer(s) to apply more or less pressure to the trailer brakes?

Answer: Relay Valves

Air brakes systems are three braking systems combined they are?

Answer: Emergency, Parking, Service

The most common foundation brake is the?

Answer: S-cam drum brake

The low air pressure warning light must come on before the air pressure in the tanks falls below what psi level?

Answer: 60 psi

The braking power of spring brakes depends on?

1. Proper adjustment

2. How far the modulating control lever(if present) is moved

3. Traction

You have a fully-charged air system (125 psi). After turning off the engine and releasing the service brake what are the maximum leakage rates per minute for both single and combination vehicles?

Answer: 2 psi for single, 3 psi for combination

Air Tanks should be drained:

Answer: On pre-trip and post-trip inspections

On a long downhill grade, it is recommended that you:

Answer: Gear down and keep your speed 5 mph below the "safe speed"

When air pressure in the tanks falls below a certain level, the cut in:

Answer: Turns on the air compressor.

True or False. Disc Brakes are the most widely used brakes on commercial vehicles today.

Answer: False, The S-cam brakes are the most common.

What is the correct placement of warning devices when parked on the shoulder of a one-way or divided highway?

Answer: At 10 feet, 100 feet, and 200 feet from the rear of the vehicle

At speeds below 40 mph, you need at least how many seconds for how many feet of vehicle length?

Answer: One Second for 10 feet.

You are driving a 60-foot rig at 55 mph. How many seconds of space should you have between you and the vehicle ahead?

Answer: 7 seconds

If you are on the right shoulder going 55 miles per hour, what is the safest way to get onto the road?

Answer: Stay on the shoulder if it is clear and come to a stop, then return to the road when it's safe.

The proper distance to use high beams is at least what feet away from an approaching vehicle?

Answer: 500 feet

What is the ratio for a tie-down on a cargo?

Answer: A cargo should have at least ONE tie down for each TEN feet of cargo.

You are stopped on the shoulder of a curve that prevents approaching traffic from seeing your vehicle. How far back should you place your last warning device?

Answer: 500 feet

During a Pre-Trip inspection, check your brakes and suspension system for:

1. Brake shoes and pads with fluid in them.

2. Shoes worn thinner than 1/4 inch

3. Cracked, missing, or broken parts.

In a Pre-Trip inspection what should your tires look like?

Tires should not be mismatched in "Size" and "Ply", nor worn or damaged.

Front tires: 4/32 Others tires: 2/32

Too much weight on the Steering Axle can cause?

Answer: Hard Steering

What can cause your Brakes to apply unevenly,not grab properly and make them weak?

Answer: Driving in Heavy Rain or Deep Standing Water.

"Water in the Brakes"

While driving what is the best method to overcome "FATGUE and Lack of Alertness"

Answer: SLEEP

When should you turn off your Retarders?

Answer: Whenever the road is Wet, Icy or Snow Covered.

What is operating a motor vehicle with the intent of doing harm to others or physically assaulting a driver or their vehicle?

Answer: ROAD RAGE

What can cause you to lose your CDL for at least One Year for a "FIRST OFFENSE"

1. Driving a CMV if your blood alcohol concentration is .04% or higher.

2. Driving a CMV under the influence of "Alcohol"

3. Refusing to undergo blood alcohol testing

4. Driving a CMV while under the influence of a controlled substance.

5. Leaving the scene of an accident involving a CMV

6. Committing a felony involving the use of a CMV.

When parked on the side of the road remember to?

Answer: Turn on your four-way emergency flashers, as caution do not trust your "Tail Lights" to give warning.

What are 4 basic types of Retarders?

1. Exhaust

2. Engine

3. Hydraulic

4. Electric

All Retarders can be turned on or off by the driver.

What is your most important way to see the sides and rear of your vehicle?

Answer: Regular Checks, check your mirrors to be aware of traffic about every 7-15 seconds.

What three things add up to total stopping distance?

Answer: Percption Distance plus Reaction Distance plus Braking Distance = Total Stopping Distance

"Optional" emergency equipment would consist of?

1. Chains

2. Tire changing equipment

3. List of emergency phone numbers

4. Accident reporting kit

5. Perform Brake checks during the in-cab inspection

What should wheel bearing seals be checked for?

1. Missing Spacers, Studs, Lugs, and Clamps

2. Damaged or Mismatched Lock Rings

3. Welding on rims (Note as a defect)

4. Rust and loose nuts

5. Out-of-round stud or bolt holes on rims indicate problems.

6. Check the hub oil supply- no leakage

What's the most important hand signal that you and the "HELPER" should agree on?

Answer: "Stop"

What are the two ways to know when to shift?

1. Use Engine Speed (RPM)

2. Use Road Speed (MPH)

You can use water on what type of fire:

Answer: Tire fires

Use the A:B:C fire extinguisher on:

1.Burning liquids and Electrical fires

2.Cloth fires

3.Wood and Paper fires

What three kinds of emergency equipment must you have?

1. 3 Red Reflective Triangles

2. Spare Electrical Fuses

3. Properly Charged and Rated Fire Extinguisher

Signs of tire failure would be:

1. A loud bang

2. Heavy Steering

3. Vibration

Which of the following is true about double-clutching and shifting?

Answer: Use your tachometer and road speed to tell you when to shift.

What is important about downshifting?

Answer: Remember to Downshift before you enter a curve.

Use the B:C fire extinguishers on:

1. Cloth fires

2. Wood and Paper fires

3. Burning liquids and Electrical fires

Whenever you are being tailgated, you should:

Answer: Increase the space in front of you.

What is the meaning of the red triangles with an orange center on the back of a vehicle?

Answer: The vehicle is slow moving.

If your hydraulic brakes go out, what should you do?

1. Try pumping the brakes to generate pressure.

2. Downshift

3. Use the parking brake

While driving, you should look ahead:

Answer: 12 to 15 seconds.

What should you do when using your turn signal?

Answer: When turning, signal early.

Avoid using your horn because:

Answer: It may startle other drivers.

Why should you cover the cargo?

Answer: To protect the cargo and keep it from spilling.

What is true about clearing a overhead clearance?

Answer: An empty van is higher than a loaded van.

Why don't new trucks use the same gear for going down a hill as they would for going up a hill?

Answer: They have low friction parts.

You are driving on a highway and your front tire has just blown out. You should?

Answer: Stay off the brake until you have slowed down.

How do you start your vehicle on an uphill grade?

Answer: Use the parking brake to keep the vehicle from rolling backwards and then engage the clutch.

What can cause you to skid?

Answer: Over Accelerating.

What is the total stopping distance when driving a heavy vehicle on dry pavement at 55 MPH?

Answer: 6 seconds

A broken coolant hose while driving?

Answer: Can cause a fire.

When backing a trailer,

Answer: Turn the steering wheel in the opposite direction you want to go.

Which of the following contains more alcohol? 

1. A 12 ounce mug of 5% beer, 

2. A 5 ounce glass of 12% wine or 

3. A 1 1/2 ounce shot of 80 proof liquor?

Answer: All three contain the same amount of alcohol.

You must keep shipping papers for hazardous materials?

Answer: In a pouch on the driver's door.

Shippers must write the name of the hazard class of hazardous products?

Answer: On the shipping papers and on the diamond-shaped labels or special tags on the container.

Why is it important to check and cover your cargo?

1) You need to protect people from spilled cargo.

2) You should look at your cargo in the mirrors often while driving.

3) You need to protect the cargo from the weather.

For electrical fires and burning liquids, use?

Answer: an A:B:C or B:C type extinguisher.

To correct a drive-wheel braking skid you should?

Answer: COUNTERSTEER

When transporting cargo, when should you inspect the materials and securing devices?

Answer: Before the trip, within 25 miles after beginning the trip, after every 3 hours or 150 miles, and during every driving break.

To prevent truck fires, at what 2 times should you inspect your vehicle and its gauges?

Answer: Before and during the trip

What should you do in the event of an engine fire?

Answer: Try to keep the hood closed and shoot extingishers through louvers or from the underside of the vehicle.

During the walk-around part of the pre-trip inspection, you should __

A. leave the vehicle key in the switch so you won't lose it

B. pull the key out of the switch and put it on the dash so you'll know where it is

C. leave the vehicle key in the switch so it will be handy for the engine test

D. put the key in your pocket so no one can move the vehicle while you are under it

Answer: D. put the key in your pocket so no one can move the vehicle while you are under it

An air suspension __

A. should not fill evenly all the way around

B. should fill before the air brake system reaches normal pressure

C. should allow the vehicle to tilt with the load

D. should not leak more than three psi in five minutes at normal pressure

Answer: D. should not leak more than three psi in five minutes at normal pressure

Mud flaps __

A. should touch the ground

B. should have advertising on them

C. must be made of high-grade rubber

D. may be required by state law

Answer: D. may be required by state law

During the pre-trip inspection, approach the vehicle and __

A. note the vehicle's general condition

B. check for body damage and major leaks

C. see if the vehicle leans to one side

D. all of the above

Answer: D. all of the above

Normal clutch travel is __

A. less than one or two inches

B. about one or two inches

C. more than two inches

D. not something the driver can measure

Answer: B. about one or two inches

You inspect your vehicle because __

A. it's important for safety

B. it's required by federal regulations

C. it's required by state law

D. all of the above

Answer: D. all of the above

You should do a post-trip inspection __

A. at the end of each run for each vehicle you operate

B. on the last vehicle you operate each day

C. on whichever vehicle the dispatcher selects

D. on the same vehicle every day

Answer: A. at the end of each run for each vehicle you operate

Drive tires must have at least ___ of tread, and no less

A 1/4 inch

B. 2/32 inch

C. 1/2 inch

D. 4/32 inch

Answer: D. 4/32 inch

A serous hazard of exhaust system leaks is ___

A. excess smoke can enter the cab

B. exhaust smoke can damage the cargo

C. poisonous fumes can enter the cab

D. excess smoke can damage the vehicle

Answer: C. poisonous fumes can enter the cab

If your vehicle is overloaded to the rear, it is ___

A. very stable

B. likely to tip over

C. likely to go into a jackknife

D. likely to go into a front-wheel skid

Answer: D. likely to go into a front-wheel skid

The legal size and weight distribution limits ___

A. should be your guide under all conditions

B. are not changed by adverse conditions

C. may not ensure safe operations in bad weather

D. are often changed by states from season to season

Answer: C. may not ensure safe operations in bad weather

Blocking used to prevent cargo movement ___

A. is secured to the cargo compartment floor

B. is secured to the cargo itself

C. is secured to the cargo and the walls

D. must be placed every 2 1/2 feet

Answer: A. is secured to the cargo compartment floor

You must inspect cargo within __ miles after starting a trip.

A. 10

B. 25

C. 50

D. 100

Answer: C. 50 miles

The lighter your load ___

A. the less traction your vehicle has

B. the longer your stopping distance

C. the longer your stopping time

D. all of the above

Answer: D. all of the above

The first step in correcting a drive-wheel braking skid is to let off the brake

A. true

B. false

Answer: A. true

Poorly distributed cargo can ___

A. cause the vehicle to pull to one side

B. make the vehicle feel like it's going to tip over

C. make the vehicle harder to put into motion and stop

D. all of the above

Answer: D. all of the above

Bridge laws ___

A. are the same as the maximum legal axle weight

B. control traffic on a bridge

C. apply only to drawbridges

D. can lower the maximum axle weight limit

Answer: D. can lower the maximum axle weight limit

Loading a device beyond its rating is __

A. illegal and unsafe

B. impossible

C. the smart way to increase a payload

D. a good way to test your equipment

Answer: A. illegal and unsafe

If you try to downshift while coming down a mountain, you might __

A. damage the clutch

B. damage the engine

C. get stuck in neutral

D. lose traction

Answer: C. get stuck in neutral

A vehicle marked at the rear with a red triangle having an orange centre ___

A. is hauling hazardous materials

B. is moving slowly

C. is a farm vehicle

D. makes frequent stops

Answer: B. is moving slowly

When steering to avoid a crash __

A. keep one hand on the steering wheel and the other hand free for shifting

B. turn and apply the brake at the same time for more control

C. use both hands on the steering wheel and don't brake while turning

D. none of the above

Answer: C. use both hands on the steering wheel and don't brake while turning

The most common skid is ___

A. rear wheels losing traction due to excessive braking or acceleration

B. steering tires sliding due to front-brake lock-up

C. trailer wheels sliding out on curves

D. cuased by a front tire blow-out

Answer: A. rear wheels losing traction due to excessive braking or acceleration

Dirty headlights give about __ as much light as clean ones

A 100 percent

B. 90 percent

C. 75 percent

D. 50 percent

Answer: D. 50 percent

To prepare for winter driving, check that your antifreeze will do the job __.

A. by inspecting the color

B. by checking the level in the reservoir

C. using a special coolant tester

D. by draining the system and replacing the antifreeze

Answer: C. using a special coolant tester

In hot weather, tire inflation pressures can be higher than normal. You should ___

A. inspect the tires less often

B. let air out of your tires when the pressure exceeds 105 psi.

C. not let air out of the tires when they are hot

D. spin the tires to cool them off

Answer: C. not let air out of the tires when they are hot

Total stopping distance is ___ plus reaction distance plus braking distance.

A. visual distance

B. perception distance

C. vehicle length

D. trip distance

Answer: B. perception distance

When roads are wet, icy, or covered with snow, you should ___

A. use your retarder for braking as much as possible

B. turn the retarder off

C. use the maximum setting if the retarder has power adjustment settings

D. be ready to turn the retarder on the minute you start to skid

Answer: B. turn the retarder off

Lane changes, turns, merges, and tight maneuvers require __

A. lots of luck to perform without accident

B. frequent checking and rechecking, using your mirrors

C. maintaining a constant speed

D. trip distance

Answer: B. frequent checking and rechecking, using your mirrors

Rust around wheel nuts often means that __

A. the nuts are loose

B. the nuts are broken

C. the nuts are about to break

D. the vehicle needs painting

Answer: A. the nuts are loose

The engine speed that you use for shifting should be based on ___

A. information in your owner's manual

B. the vehicle's GVWR

C. the vehicle's mpg

D. what feels right for the situation

Answer: A. information in your owner's manual

Which of the following creates the braking force in a braking system?

A. air pressure

B. hydraulic pressure

C. vacuum pressure

D. friction

Answer: D. friction

When you first start your vehicle, the warning lights should come on

A. true

B. false

Answer: A. true

Your vehicle's battery box must have __

A. at least two batteries

B. enough fluid to work properly

C. at least one loose ground wire

D. a secure cover

Answer: D. a secure cover

Which of the following is a hazardous materials class?

A. "requires placards"

B. "other regulated materials"

C. "dangerous"

D. none of the above

Answer: B. "other regulated materials"

The color of the turn signals facing forward must be ___

A. amber only

B. white

C. white or amber

D. whatever the manufactures selected

Answer: A. amber only

Normal engine temperature ranges from ___

A. 180 to 250 degrees Fahrenheit

B. 100 to 250 degrees Fahrenheit

C. 165 to 185 degrees Fahrenheit

D. 20 to 45 psi

Answer: C. 165 to 185 degrees Fahrenheit

The law requires CMVs to have ___

A service brakes

B emergency brakes

C parking brakes

D all of the above

Answer: D. all of the above

You may not use tires that ___ on your vehicle.

A are belted

B. are flat or have leaks

C. have a tread depth of more than 2/32 of an inch

D. are threated

Answer: B. are flat or have leaks

To drive your vehicle in a way that would cause it to break down or cause an accident is not only unsafe, it's illegal.

A true

B. false

Answer: A. true

Prescription drugs are allowed if a doctor says the drugs will not affect safe driving ability.

A True

B False

Answer: A. True

You are required to stop at a railroad grade crossing when ___

A. the crossing is located in a city or town with frequent train traffic

B. when there are no warning signals at the crossing

C. the cargo being carried makes a stop mandatory under state or federal regulations

D. when a flagman tells you that it's safe to proceed

Answer: C the cargo being carried makes a stop mandatory under state or federal regulations

Once you get your CDL for a specific vehicle group, you may never change it to another group.

A. True

B. False

Answer: B. False

The only sure cure for fatigues is ____

A. narcotics

B. amphetamines

C. real sleep

D. caffeine

Answer: C. real sleep

Medical certificates must be renewed every ___

A. year

B. six months

C. three years

D. time a serious illness affects your ability to drive

Answer: A. year

If you are convicted of a traffic violation in a state other than your home state, you must make notification ____

A. to your employer

B. withing 30 days of the date of conviction

C. in writing

D. all of the above

Answer: D. all of the above

A driver who is disqualified ___

A. must always receive a jail sentence

B. has forfeited bond

C. may not drive a CMV

D. may not drive a motor vehicle

Answer: C. may not drive a CMV

When operating a CMV, which of the following first offenses will result in the loss of your CDL for one year?

A. driving with an expired of suspended CDL

B. excessive speeding, reckless driving, or any traffic offense that causes a fataility

C. DUI, DWI, and driving while on drugs

D. driving with a load of hazardous materials that are not properly secured

Answer: D. DUI, DWI, and driving while on drugs

One purpose of Commercial Driver Licensing is to disqualify drivers who operate commercial motor vehicles in an unsafe manner. 

A. True, 

B. False

Answer: A.True

All CDL skill tests must be taken in ___

A. a representative vehicle

B. a company vehicle

C. a vehicle with air brakes

D. a rented vehicle

Answer: A a representative vehicle

If you are an experience driver, your state may issue your CDL without having you take ____

A. a written test, if you have never failed a written driver test

B. a skill test, if you have a safe driving record

C. a skill test, if you have over 500,000 miles worth of driving experience

D. a written or skill test if you have three points or less

Answer: B. a skill test, if you have a safe driving record

What are the five steps for shifting down?

1. Release accelerator. Push in clutch and shift to neutral at the same time. 

2. Release clutch. 

3. Press accelerator, increase engine and gear speed to the RPM required in the lower gear. 

4. Push in clutch and shift to the lower gear at the same time. 

5. Release clutch and press accelerator at the same time.

When performing a pre-trip inspection, what should you do before you go under the vehicle?

Answer: Put the keys in your pocket

How do you figure out how much space to have between you and the vehicle in front of you?

Answer: 1 second for every 10 feet of vehicle, plus 1 second if over 40mph

How often should you inspect your tires when driving in very hot weather?

Answer: two hours or every 100 miles

What is the five steps for shifting up?

1. Release accelerator, push in clutch and shift to neutral at the same time. 

2. Release clutch. 

3. Let engine and gears slow down to the RPM required. 

4. Push in clutch and shift to the higher gear at the same time. 

5. Release clutch and press accelerator at the same time.

A tie rod is part of what system?

Answer: The suspension system

When turning right in a long vehicle, what do you do?

Answer: Turn wide as you complete the turn

What three types of safety equipment must you have before driving?

Answer: spare fuses, three red reflective triangles, and a fire extinguisher

What are front-end header boards?

Answer: They protect you from forward movement of cargo

What is the coupling device capacity?

Answer: The maximum weight a device can pull or carry

To correct a drive-wheel braking skid, what do you do?

Answer: countersteer

How strong does the combined strength of all tie downs need to be?

Answer: Enough to lift 1.5 times the load

To correct a drive-wheel braking skid, what do you do?

Answer: countersteer

When you need to stop quickly and safely, what do you do?

Answer: Apply the brakes as hard as you can without locking the wheels.

What causes hard steering?

Answer: too much weight on the steering axle.

How often should you inspect your cargo?

Answer: 25 miles after beginning a trip, then every 3 hours or 150 miles and after every break you take.

How many cargo tie downs should you have?

Answer: At least 2, and one for every 10 feet of cargo

When should you dim your lights?

Answer: Within 500 feet of another vehicle

When should you check your tires in very hot weather?

Answer: Every 2 hours or 100 miles

What is a B:C type fire extinguisher designed for?

Answer: electrical fires and burning liquids

What type of fire extinguisher is used for wood, paper, cloth?

Answer: A:B:C

Do not use water on what types of fires?

Answer: electrical and gasoline

How far can you see with your low beams?

Answer: 250 feet

How far can you see with your high beams?

Answer: 350-500 feet

How much should you slow down on different surfaces?

Answer: 1/3 on wet; 1/2 on packed snow; As slowly as possible on ice, and stop ASAP

How far ahead should you look?

Answer: 12-15 seconds

What three things add up to total stopping distance?

Answer: Perception distance + reaction distance + braking distance = Total Stopping Distance

How long does it take to fully stop at 55mph?

Answer: 6 seconds

What impact does doubling your speed have on your total stopping distance?

Answer: It makes it four times as long.

How often should you inspect your vehicle during a trip?

Answer: Within the first 50 miles, then every 150 miles or 3 hours

How much tread depth is mandatory?

Answer: at least 4/32" on every major groove on front wheels. At least 2/32" on other wheels. No fabric showing through the tread or sidewall.

How often should you drain air tanks?

Answer: After each working day.

How do you brake when you drive a tractor-trailer combination with ABS?

Answer: Use only the braking force necessary to stop safely and stay in control.

You still have normal brake functions if your ABS is not working. True or False?

Answer: TRUE

Why should you be in the proper gear before starting down a hill?

Answer: It will slow down the engine speed and help in continuing normal stopping distances.

What factors can cause brakes to fade or fail?

Answer: Too much heat by using the brakes too much. They can also be out of adjustment, also caused by too much heat.

The use of brakes on a long, steep downgrade is only a supplement to the braking effect of the engine. True or False?

Answer: TRUE

If you are away from your vehicle only a short time, you do not need to use the parking brake. True or False?

Answer: FALSE

How can you test the low pressure warning signal?

Answer: Shut the engine off when you have enough air pressure so that the low pressure warning signal is not on. Turn the electrical power on and step on and off the brake pedal to reduce air tank pressure. The low air pressure warning signal must come on before the pressure drops to less than 60 psi in the tank (or tank with the lowest air pressure, in dual air systems).

How can you check that the spring brakes come on automatically?

Answer: Continue to fan off the air pressure by stepping on and off the brake pedal to reduce tank pressure. The tractor protection valve and parking brake valve should close (pop out) on a tractor-trailer combination and single vehicle types when the air pressure falls to the manufacturer's specification (20-40 psi). This will cause the spring brakes to come on.

What are the maximum leakage rates?

Answer: 2 psi in a minute for single vehicles and 3 psi in a minute for combination vehicles. When applying 90 or more psi to the brakes the loss should be 3 psi per minute in single vehicles and 4 psi for combination vehicles in a minute.

What are the slack adjusters?

Answer: They are what determine how hard you have to press on the brakes to have them engage.

How can you check slack adjusters?

Answer: Use gloves and pull hard on the slack adjuster, if the slack adjuster moves more than an inch, it needs adjusting.