CDL Air Brakes Practice Test - Rhode Island

16. It may not be safe to operate at legal maximum weights:
in hot weather.
during bad weather or in mountains.
on two-way streets.
17. Which of the following is NOT a warning sign of fatigue?
Heavy eyelids
Frequent blinking
Driving at the speed of the traffic
18. If you are driving a 30-foot vehicle at 55 mph, you should leave at least _____ between you and the vehicle ahead.
3 seconds
2 seconds
4 seconds
19. Which of the following is not a type of retarder?
Pressure
Hydraulic
Exhaust
20. Which of the following is NOT a way to determine if your trailer is equipped with ABS (antilock braking system)?
The letters "ABS" are printed on the side of the steering wheel.
It was built after March 1, 1998.
It has yellow ABS malfunction lamps.
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