CDL COMBINATION PRACTICE TEST MICHIGAN

11. Longer combination vehicles have the tendency to swing wide on turns. This is called:
off-tracking.
jackknifing.
hydroplaning.
12. Under a pressurized system, the radiator cap:
should never be removed until the system has cooled.
should never be hot.
should be removed when the coolant is hot.
13. Why should you cover your cargo?
To protect people from spilled cargo.
To protect the cargo from weather.
All of the above.
14. If a load is 50 feet long, the minimum number of tie-downs required is:
5
10
4
15. You are driving a combination vehicle and must use your brakes to avoid a crash. You should:
use stab braking or controlled braking.
brake lightly and hold the steering wheel firmly.
push the brake pedal as hard as you can and hold it there.
16. You are coupling a semi-trailer to your tractor but have not yet backed under. The trailer is at the right height when:
it will be raised slightly when the tractor is backed under it.
the end of the kingpin is even with the top of the fifth wheel.
the locking jaws are around the head of the kingpin.
17. What should you do if your vehicle gets stuck on the railroad tracks?
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.
18. If you must drive slowly, how should you alert following drivers?
Use your emergency flashers if it is legal
Turn on your taillights
Flash your brake lights
19. One way to prevent hydroplaning is to:
make sure you have enough tread on your tires.
take curves at higher speeds.
have less than 4/32 inch tread depth in every major groove on front tires.
20. Which of these statements is true?
"Bobtail" tractors can take longer to stop than a combination vehicle loaded to maximum gross weight.
Large combination vehicles take longer to stop when they are fully loaded than when they are empty.
Trailer skids are more likely to happen when the trailer is empty or lightly loaded.
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