Skip to main content
DMV Test Free
ENES

Practice test 2 of 10

Alaska CDL — Air Brakes Practice Test 2

The Alaska 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.Leaving emergencies aside, when does the manual say an automatic slack adjuster should need to be adjusted by hand?
  2. 2.You make a gentle stop on dry pavement in a truck with ABS, and no wheel comes close to locking. What part does ABS play in that stop?
  3. 3.You hook up to an older trailer built before ABS was required, and you can't tell whether it has ABS. What does the manual suggest?
  4. 4.Bus drivers earn the passenger endorsement through a knowledge test covering Sections 2 and 4. What does the manual add when the bus has air brakes?
  5. 5.Your truck's air compressor carries its own oil supply instead of sharing the engine's oil. What does that add to your routine before driving?
  6. 6.It is below freezing, your brakes are soaked, and you will be parking soon. How does the manual say to dry them first?
  7. 7.Compressed air carries some water and compressor oil into the air tanks. Where do they tend to collect?
  8. 8.An air brake system includes an emergency brake system. How does the manual describe what it is made of?
  9. 9.You are descending a long grade in the proper low gear and braking the way the manual describes. About how long should each brake application last?
  10. 10.Your air compressor stops working while you are on the road. What does the manual say about the air already held in the storage tanks?

0 of 25 answered