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Question:

Which of these statements about downshifting for a long downhill grade is true?

1. The proper time to downshift is just after the vehicle starts down the hill.

2. Downshifting allows engine compression and friction to help the brakes slow the vehicle.

3. Downshifting should not be done with automatic transmissions.

Answer: Downshifting allows engine compression and friction to help the brakes slow the vehicle.

This question is in Section 1: General Knowledge of our CDL Test Guide. Explore now!
Related Question

Question: To gain a CDL in Texas, you must self-certify that…?

1. You are not addicted to alcohol

2. You are not addicted to drugs

3. You are not an insulin-dependent diabetic

4. All of the above

All of the above

Don't try to hide anything from the licensing authorities. If you are found to have done so, the penalties if you have an accident caused by something you tried to hide will be very severe.

Question: Which of the following drivers is NOT exempt from obtaining a CDL, under Florida law?

A long-haul trucker carrying bread

Only military, emergency personnel, farmers and farm employees but not those employed to drive vehicles for farms, and recreation vehicles are exempt from needing CDLs. Those hauling product, regardless of whether it is food or not, must have a CDL.

Question: Which of the following is true about a vehicle with a high center of gravity?

The cargo should be rearranged so that the heaviest parts of the cargo are under the lightest parts.

Question: You are transporting hazardous materials. When you are not behind the wheel, the shipping papers must be on the driver's seat or:

In the driver's door pouch.

Question: What is the best way to test your vehicle's low air pressure warning signal?

Step on and off the brake pedal with the engine off to reduce air pressure below 60 psi.

The best way to test the low air pressure warning signal is to turn off the engine of your vehicle while leaving the electric on, then step on and off your brake pedal. The low pressure warning signal should come up when you reduce pressure below 60 psi. You should not need to get down to 30 psi ever.

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