The S-Cam brake:

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....

What does ABS stand for?

What does ABS stand for?A. All Brake System.B. Air Bag Stabilizer.C. Antilock Brake System.Answer: C. Antilock Brake Syst...

What is a Modulating Control Valve?

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...

An air application gauge shows you:

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...

The stop light switch:

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...

The air compressor governor controls:

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....

Emergency stab braking is when you:

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...

Convex (curved or spot) mirrors:

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...

Backing a commercial vehicle is:

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....

Placards must be:

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...

Containerized loads:

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....

Most serious skids result from:

Most serious skids result from:A. Turning sharply.B. Decelerating too fast.C. Driving too fast for conditions.Answer: C. Driving too fast for co...

Implied consent means:

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...

What does emergency braking mean?

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...

The purpose of retarders is to:

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...

After starting the engine:

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....

An air suspension __

An air suspension __A. should not fill evenly all the way aroundB. should fill before the air brake system reaches normal pressureC. should allow the...

Mud flaps __

Mud flaps __A. should touch the groundB. should have advertising on themC. must be made of high-grade rubberD. may be required by state lawAnswer: D....

Normal clutch travel is __

Normal clutch travel is __A. less than one or two inchesB. about one or two inchesC. more than two inchesD. not something the driver can measureAnswer: B....

You inspect your vehicle because __

You inspect your vehicle because __A. it's important for safetyB. it's required by federal regulationsC. it's required by state lawD. all of the aboveAnswer: D....

The lighter your load ___

The lighter your load ___A. the less traction your vehicle hasB. the longer your stopping distanceC. the longer your stopping timeD. all of the aboveAnswer: D....

Poorly distributed cargo can ___

Poorly distributed cargo can ___A. cause the vehicle to pull to one sideB. make the vehicle feel like it's going to tip overC. make the vehicle harder...

Bridge laws ___

Bridge laws ___A. are the same as the maximum legal axle weightB. control traffic on a bridgeC. apply only to drawbridgesD. can lower the maximum axle...

When steering to avoid a crash __

When steering to avoid a crash __A. keep one hand on the steering wheel and the other hand free for shiftingB. turn and apply the brake at the same time...

The most common skid is ___

The most common skid is ___A. rear wheels losing traction due to excessive braking or accelerationB. steering tires sliding due to front-brake lock-upC....

A driver who is disqualified ___

A driver who is disqualified ___A. must always receive a jail sentenceB. has forfeited bondC. may not drive a CMVD. may not drive a motor vehicleAnswer: C....

How much tread depth is mandatory?

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...

How can you check slack adjusters?

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...