View instructions
The air brakes endorsement applies to applicants who wish to drive a vehicle with air brakes in Class A, B, or C CDL. To drive a vehicle with air brakes, you must pass the air brake component of the Rhode Island CDL knowledge test. The RI CDL air brakes test consists of 25 questions, and you'll need at least 20 correct answers to pass (80%). The test covers the information found in the air brakes section of the Rhode Island CDL Manual. Take this RI CDL practice test now to prepare for the actual air brakes test!
1. The air compressor is connected to:
the engine.
the transmission.
the radiator.
2. To prevent rollover, you should:
place the cargo near the rear of the trailer.
put the lightest parts of the cargo under the heaviest parts.
keep the cargo as close to the ground as possible.
3. Front brake limiting valves were used to:
prevent overheating of the front tires.
reduce your speed so further braking or shifting is not required.
reduce the chance of the front wheels skidding on slippery surfaces.
4. Which of the following is NOT part of the air brake system?
Anti-lock brake system
Emergency brake system
Parking brake system
5. Before driving a vehicle with a dual air brake system, you should allow time for the air compressor to build up a minimum of ____ pressure in both the primary and secondary systems.
50 psi
150 psi
100 psi
6. The total stopping distance for vehicles with air brake systems is made up of __ different factors.
7. In a vehicle with a dual air brake system:
each system has its own air tanks.
one system supplies air to the trailer.
both systems typically operate the regular brakes on the rear axle.
8. On any upgrade, gravity:
slows you down.
speed you up.
doubles your speed.
9. A dual air brake system:
has two separate air brake systems, which use two separate sets of brake controls.
has two separate air brake systems, which use a single set of brake controls.
has a single air brake system, which uses a single set of brake controls.
10. Rough acceleration:
is necessary to warm up the engine.
improves gas mileage.
can cause mechanical damage.
Page 1 of 3
Next page

RI Air Brakes CDL Test

Number of questions: 25
Correct answers to pass:20
Passing score:80%
Share This Online CDL Test
Rate this Air Brakes CDL Test
4.9 out of 5
based on 394 votes