AND GRADED QUESTIONS AND ANSWERS 2026 LATEST UPDATED |
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1. What is the minimum amount of tread depth that your tires should have?
A. There should be at least four-thirty seconds (4/32) inch of tread depth in every major groove
on the front wheels and at least two-thirty seconds (2/32) inch tread on all other wheels.
B. There should be at least one-inch tread depth in every major groove on all wheels.
C. There should be at least four-thirty seconds inch tread depth in every major groove on all
wheels. - (ANSWER)A. There should be at least four-thirty seconds (4/32) inch of tread depth
in every major groove on the front wheels and at least two-thirty seconds (2/32) inch tread on all
other wheels.
2. How do you test hydraulic brakes for a leak?
A. With the vehicle under way at a low speed, apply firm pressure, stopping the vehicle as
quickly as possible.
B. With the vehicle stopped, push down the brake pedal and do not release for at least five
seconds.
C. With the vehicle stopped, pump the brake pedal three times. Apply firm pressure, and then
hold for five seconds. - (ANSWER)C. With the vehicle stopped, pump the brake pedal three
times. Apply firm pressure, and then hold for five seconds.
,3. How do you test hydraulic brakes for their stopping action?
A. Go about 5 mph. Push the brake pedal firmly.
B. With the vehicle stopped, pump the brake pedal three times. Apply firm pressure, and then
hold for five seconds.
C. With the vehicle stopped, push the brake pedal firmly, and then hold for five seconds. -
(ANSWER)A. Go about 5 mph. Push the brake pedal firmly.
4. How does tire pressure affect hydroplaning?
A. Hydroplaning is not affected by tire pressure.
B. Hydroplaning is more likely to occur when tire pressure is low.
C. Hydroplaning is more likely to occur when tires are over inflated. - (ANSWER)B.
Hydroplaning is more likely to occur when tire pressure is low.
5. What is the best way to use the brake pedal on a steep downhill grade?
A. Use a heavy pressure repeatedly.
B. Avoid using the brakes.
,C. Shift to a lower gear before starting downgrade and use a light, steady pressure on the brake
pedal. - (ANSWER)C. Shift to a lower gear before starting downgrade and use a light, steady
pressure on the brake pedal.
6. What is a good rule as to the speed you should go when driving at night?
A. You should keep your speed slow enough to stop within the range of your headlights.
B. You do not have to be able to stop within the distance that you can see.
C. You should never drive so fast as to require your high beams. - (ANSWER)A. You should
keep your speed slow enough to stop within the range of your headlights.
7. How many times more distance does it take to stop whenever you double your speed?
A. Twice as much distance.
B. Three times as much distance.
C. Four times as much distance. - (ANSWER)C. Four times as much distance.
8. In checking tires what are some problems that you should look for?
A. Too much or too little specification information on the sidewalls.
B. Bad wear, cuts or other damage, tread separation, cut or cracked valve stems. Dual tires that
come in contact, mismatched sizes, radial and bias-ply tires used together.
, C. Regrooved, recapped, or retreaded tires on the drive wheels. - (ANSWER)B. Bad wear, cuts
or other damage, tread separation, cut or cracked valve stems. Dual tires that come in contact,
mismatched sizes, radial and bias-ply tires used together.
9. What are some steering system defects to look for?
A. Missing nuts, bolts, cotter keys or other parts; bent, loose or broken parts.
B. Steering wheel play of two degrees.
C. Steering wheel play of five degrees. - (ANSWER)A. Missing nuts, bolts, cotter keys or other
parts; bent, loose or broken parts.
10. What are some defects to look for in the suspension system?
A. Spring hangers that allow movement of the axle from the proper position; cracked or broken
spring hangers; spring hangers or other axle positioning parts that are cracked damaged, or
missing.
B. Oil leaks in the frame or fifth wheel assembly.
C. Oil leaks in the brake drums. - (ANSWER)A. Spring hangers that allow movement of the
axle from the proper position; cracked or broken spring hangers; spring hangers or other axle
positioning parts that are cracked damaged, or missing.
11. In holding a steering wheel what is the proper way to place your hands?