Rhode Island CDL — Air Brakes Practice Test

The Rhode Island CDL — Air Brakes knowledge test has ~25 questions; you need ~20 correct (80%) to pass.

Or take one of 10 full-length practice tests

25 questions · pass with 20 correct. You get instant feedback and an explanation after every answer.

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The full-length test, with feedback and an explanation after every answer.

Rhode Island CDL — Air Brakes practice tests

10 full-length practice tests, each with 25 questions and a pass mark of 20, like the real test. You see the answers and explanations after you grade.

Test 1
25 questions · pass with 20
On a long downgrade, two of your brakes are badly out of adjustment while the rest are fine. What does the manual warn can happen?
Test 2
25 questions · pass with 20
Your air compressor is driven by a belt. During the engine compartment part of your inspection, what does the manual have you check on that belt?
Test 3
25 questions · pass with 20
You are parked with the spring brakes set, and you press down hard on the brake pedal while waiting. What could this do?
Test 4
25 questions · pass with 20
Your air compressor is driven by a belt. During the engine compartment part of your inspection, what does the manual have you check on that belt?
Test 5
25 questions · pass with 20
Your tractor has working ABS but your trailer has none. In an emergency stop, should you simply apply the brakes fully?
Test 6
25 questions · pass with 20
How do Rhode Island's guidelines treat the Air Brakes test for Class A applicants compared with Class B applicants?
Test 7
25 questions · pass with 20
According to Rhode Island's guidelines, which manual are its CDL knowledge tests, including Air Brakes, based on?
Test 8
25 questions · pass with 20
Which of these air-braked vehicles was NOT required to come equipped with antilock brakes?
Test 9
25 questions · pass with 20
In a typical dual air brake system, one system handles the rear-axle brakes. What does the other system usually work?
Test 10
25 questions · pass with 20
One half of your dual air brake system has dropped very low on pressure while the other half is normal. How does that affect stopping?