Question

If a truck is equipped, a trailer brake hand valve can be used to:

Answers

Add fuel to the truck.

Prevent the truck from rolling back when being started from a stop.

Check the engine oil level.

Explanation

If a tractor-trailer is so equipped, the trailer brake hand valve can be used to stop the vehicle from rolling back when being started from a stop.

This questions appears in the following tests:

Alaska Class A Knowledge Test

Alaska Class A Knowledge Test

Alaska Class B Knowledge Test

Delaware Class B Knowledge Test

Idaho Class B Knowledge Test

Kentucky Class B Knowledge Test

Maryland Double

Michigan Class A Knowledge Test

Michigan Passenger

Montana Class B Knowledge Test

New Mexico Double

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Tennessee Double

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