NEW HAMPSHIRE CDL DOUBLES TRIPLES PRACTICE TEST

11. Most heavy trucks with manual transmissions require ____ to change gears.
triple clutching
double clutching
single clutching
None of the above.
12. Which of these is more likely to rollover due to the "crack-the-whip" effect?
5-axle tractor semitrailers
The last trailer of triples
The front trailer of 65 ft. conventional doubles
The last trailer of doubles
13. Another name for front-end header boards is:
head belt.
cargo stopper.
containerized racks.
headache racks.
14. Texting while operating a commercial motor vehicle is:
only allowed at night.
illegal.
acceptable if you are contacting your supervisor.
acceptable if you are contacting your dispacther.
15. Which of the following is not a type of retarder?
Exhaust
Pressure
Electric
Hydraulic
16. When you discover a fire, if the trailer doors are hot you should not open them because:
the temperature of the trailer should not be changed in any way.
with air many fires do less damage.
you should use the fire extinguisher on the door.
opening the doors lets air in and may make the fire flare up.
17. Emergency equipment is:
required.
only required when transporting hazardous materials.
encouraged.
optional.
18. How far ahead do most good drivers look?
50 to 60 seconds
3 to 4 seconds
6 to 8 seconds
12 to 15 seconds
19. You are driving a vehicle with air brakes when the low air pressure warning light and buzzer come on. You should:
slow down and test your brakes.
activate your hazard lights and drive to the nearest place where you can stop.
apply the brakes as hard as you can.
pull off the road and stop immediately.
20. Air tank drains:
should not be used in wet weather.
are used to move air to the brakes.
are used to remove water and oil from the air tanks.
protect the tanks and the rest of the system from too much pressure.
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