Skip to main content
DMV Test Free
ENES

Practice test 1 of 10

Connecticut CDL — Air Brakes Practice Test 1

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

This practice test follows that format: 25 questions, pass with 20 correct. Answer every page, then grade it to see the answers and explanations.

Questions 1–10 of 25

  1. 1.How are spring brakes held in the released position while you drive?
  2. 2.As overheated brake drums expand, what happens to braking performance?
  3. 3.How does the air brake system warn drivers behind you that you are braking?
  4. 4.When may you fully apply the brakes in an emergency stop?
  5. 5.At roughly what tank pressure does the governor stop the compressor from pumping more air?
  6. 6.On a long, steep downgrade, how should the service brakes be used?
  7. 7.The yellow ABS malfunction lamp stays lit after the start-up bulb check. What should you conclude?
  8. 8.The governor lets the compressor begin pumping again once tank pressure falls to what level?
  9. 9.Which brake problem is the one most often discovered during roadside inspections?
  10. 10.On a tractor or straight truck, spring brakes come fully on when air pressure drops into what range?

0 of 25 answered