CDL GENERAL KNOWLEDGE TEST (CONNECTICUT) - PRACTICE TEST

11. The safety valve installed in the first tank the air compressor pumps air is set to open:
at 30 psi.
if there is too little pressure.
if there is too much pressure.
every 15 minutes.
12. When approaching a vehicle as part of a pre-trip inspection, which of the following could be a sign of trouble?
Fresh oil under the vehicle
Inflated tires
Parking brake is on
All of the above
13. The Johnson bar is a valve that:
keeps air from going out if the air compressor develops a leak.
is installed in the first tank the air compressor pumps air to.
works the trailer brakes.
reduces the braking pressure to a safe level.
14. When should you turn the retarder off?
when your vehicle has a high center of gravity.
when the cargo is heavy.
when the cargo is prone to shifting.
when the road is slippery.
15. If ABS is not working:
you should pump the brakes.
a yellow malfunction lamp will light up on the control panel.
you should stay off the brake.
the brakes will lock up.
16. When an aggressive driver confronts you, you should:
avoid eye contact.
return gestures and shouts.
make eye contact.
sound your horn and move to the left lane.
17. Empty trucks require greater stopping distances because:
empty vehicles have less traction.
fully loaded trucks have less traction.
they are usually equipped with power brakes.
All of the above.
18. Hazardous materials placards are:
Signs put on the outside of a vehicle that identify the hazard class and weight of the vehicle.
Signs put on the outside of a vehicle to warn others of hazardous materials.
Signs put on top of a vehicle that identify the hazard class of the cargo.
None of the above.
19. Before entering a curve, drivers should:
speed up.
drive on the shoulder.
put the transmission in Neutral.
downshift to the right gear.
20. Empty trucks have _________ heavily loaded trucks.
less traction than
the same traction as
half the traction than
more traction than
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