MISSISSIPPI CDL COMBINATION PRACTICE TEST

11. If you get stuck on the railroad tracks, the first thing you should do is:
try to move your vehicle until you see the train.
immediately get out of the cab and move away from the tracks.
scream for help.
stay in your vehicle and call 911.
12. Which of the following is NOT part of testing the tractor protection valve?
Stepping on and off the brake pedal several times to reduce the air pressure in the tanks.
Charging the trailer air brake system.
Pulling forward slowly, then applying the trailer brakes.
Shutting off the engine.
13. Which of the following makes a rollover more likely?
Keeping the cargo as close to the ground as possible
Driving quickly around turns
Driving slowly around turns
Keeping the load centered on your rig
14. You are driving a modern truck with a manual transmission. When going down a hill you should usually:
downshift after your speed has already built up.
use a lower gear than would be required to go up the hill.
shift into neutral and coast.
use the same gear you would use to go up the hill.
15. If during vehicle inspection a tire is too hot to touch, you should:
let air out.
remain stopped until the tire cools off.
immediately decrease air pressure.
make sure there is enough engine oil on the tires.
16. Which of the following is NOT part of checking the sliding fifth-wheel?
Testing the tractor protection valve
Checking that all locking pins are present and locked in place
Checking that the slide is not damaged or parts are missing
Checking that it is properly greased
17. When driving at night you should:
keep the interior light on.
always use low beams.
use your high beams when it is safe and legal to do so.
All of the above.
18. When backing a trailer, you should:
try to position your vehicle so you can back on a curved path.
avoid using the brakes.
turn the steering wheel toward the direction you want to go.
turn the steering wheel in the opposite direction of the turn.
19. You are driving a combination vehicle and must use your brakes to avoid a crash. You should:
use stab braking or controlled braking.
use the parking brake.
brake lightly and hold the steering wheel firmly.
push the brake pedal as hard as you can and hold it there.
20. What should you do if your vehicle gets stuck on the railroad tracks?
Stay inside the vehicle and call 911.
Turn on the emergency flashers and call 911.
Call 911, then get out of the vehicle and away from the tracks.
Get out of the vehicle and away from the tracks as quickly as possible, then call 911.
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