Which of these statements about downshifting for a long downhill grade is true?
a. The proper time to downshift is just after the vehicle starts down the hill.
b. It allows engine compression and friction to help the brakes slow the vehicle.
c. It should not be done with automatic transmissions.
d. It is necessary if the vehicle has retarders.
Answer : It allows engine compression and friction to help the brakes slow the vehicle.
If the answers is incorrect or not given, you can answer the above question in the comment box. If the answers is incorrect or not given, you can answer the above question in the comment box.