CDL DOUBLES PRACTICE TEST NORTH DAKOTA

11. Alcohol:
improves reaction time.
improves muscle coordination.
does not affect judgement.
impairs depth perception.
12. Engine oil pressure should come up to normal within _________ after the engine is started.
ten minutes
seconds
five minutes
two minutes
13. Having ABS on only the trailer:
still gives you more control over your vehicle during braking.
is very dangerous.
makes the trailer more likely to roll over.
makes the trailer more likely to swing out.
14. If a load is placed on one side of the trailer:
a rollover is more likely.
making turns may be easier.
your brakes won't work.
the steering axle weight will be too light to steer safely.
15. What is the most important reason to inspect your vehicle?
Vehicle inspection is required by federal and state laws.
Achieving the best gas mileage.
Saving money by preventing costly repairs.
Your safety and that of other road users.
16. Placards are:
devices placed below a vehicle to improve traction.
signs put inside a vehicle used to warn others of hazardous materials.
a type of safety equipment.
signs placed on a vehicle to identify the hazard class of the cargo.
17. Exhaust system parts should NOT:
be loose.
rub against fuel system parts.
rub against tires.
All of the above.
18. When the spring brakes are on, you should:
pump the brakes.
press the accelerator.
not push the brake pedal down.
exceed the posted speed limit.
19. Combination vehicles usually:
require more driving skill than single CMVs.
are shorter than single than single CMVs.
are easier to drive than single than single CMVs.
All of the above.
20. Which of the following road surfaces freezes first?
Underpasses
Parkings
Bridges
Open roads
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