CDL COMBINATION PRACTICE TEST (MT)

11. You are driving on a steep downgrade in the proper low gear. Your "safe" speed is 40 mph. When your speed reaches 40 mph, you should:
apply the brakes to quickly reduce your speed to 25 mph, and then release the brakes.
maintain your current speed, and apply the brakes when you reach 50 mph to gradually reduce your speed to 40 mph.
increase your speed to approximately 45 mph, and then apply release the brakes.
apply the brakes to gradually reduce your speed to 35 mph, and then release the brakes.
12. The crack-the-whip effect:
the ends of some vehicles to drag.
can cause problems for drivers coming toward you.
can cause a vehicle to tilt.
can turn the trailer over.
13. A steering wheel should have no more than _____ of play. If there is more play than this, it may be hard to steer.
15 degrees
30 degrees
10 degrees
It doesn't matter.
14. Passive railroad crossings:
do not have traffic control devices.
should never be crossed using a CMV.
have at least one traffic control device.
usually have a person directing traffic.
15. When inspecting the coupling, make sure the fifth-wheel jaws have closed around the:
head of the kingpin.
shank of the kingpin.
the electrical cord.
the brake camshaft.
16. The wheels of a large combination vehicle are more likely to lock up when:
the trailer has new tires.
you are traveling in very hot weather.
the vehicle is heavily loaded.
the vehicle is lightly loaded.
17. When you make a quick lane change, the crack-the-whip effect can:
the trailer to swing wide to the left.
make it harder to turn without skidding.
turn the trailer over.
improve your traction.
18. When parking, you should choose a spot:
that allows you do a walk around inspection.
that allows you to pull forward when you leave.
that requires backing up.
All of the above.
19. Livestock:
should never be kept bunched together.
should always be placed in the rear of the trailer.
should never be carried on a trailer.
can move around in a trailer and cause unsafe handling.
20. If a load is 50 feet long, the minimum number of tie-downs required is:
3
4
5
10
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