CDL COMBINATION PRACTICE TEST MASSACHUSETTS

11. If you cannot make a right turn without entering another traffic lane, you should:
turn wide as you complete the turn.
swing wide to the left before starting the turn.
turn wide before you start the turn.
watch out for vehicles coming toward you and back up for them.
12. If you must drive slowly, how should you alert following drivers?
Flash your brake lights
Turn on your taillights
Help them out by signaling when it is safe to pass
Use your emergency flashers if it is legal
13. Do NOT use the parking brakes:
when you leave your vehicle.
if the brakes are very hot.
when you park for less than two hours.
to test that they work.
14. How can you tell if a converter dollie has ABS?
There is an ABS plaque on the right side of the dolly.
There is an ABS system on the right side of the dolly.
There is a red lamp on the left side of the dolly.
There is a yellow lamp on the left side of the dolly.
15. Which of the following is NOT a good rule for using turn signals?
Signal continuously until you have completed the turn.
Signal well before you turn.
Cancel your signal after you have turned.
Put your turn signal on after the turn.
16. If your vehicle thumps or vibrates heavily, it may be a sign that:
you need to shift up.
the brakes have failed.
the engine belt is loose.
one of the tires has gone flat.
17. Radial and bias-ply tires:
should not be used together.
should be used together only during bad weather.
should be used together.
should be used together only when driving in packed snow.
18. The first thing to do when coupling a tractor-semitrailer is to:
position the tractor.
lock the trailer brakes.
inspect the fifth wheel.
check the trailer height.
19. Which of the following is NOT part of the procedure to stop a trailer skid?
Not using the hand brake
Using the trailer hand brake to get traction back
Releasing the brakes
Recognizing the skid
20. Your vehicle has hydraulic brakes. When you press the brake pedal while driving and the pedal goes to the floor, remember that:
pumping the brake pedal may generate enough hydraulic pressure to stop the vehicle.
the parking brake should never used to slow the vehicle.
shifting into neutral may help slow the vehicle.
All of the above.
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