CDL Air Brakes Test

Enter your text here

Name Email
1. Emergency stab braking is:
2. The use of brakes on a long and steep downgrade under normal conditions is only supplement to:
3. The most common type of foundation brake found on heavy vehicles is the:
4. If you are driving down to the steep downgrade and you have reached the speed of 40 mph, you would apply the service brake until your speed dropped below ______ mph
5. If you do not have automatic tank drains, how often should you drain the oil and water from the bottom of compressed air storage tanks?
6. Air braking takes more time than hydraulic braking because air:
7. When brakes are applied the brake shoes will press against the:
8. The air loss rate for a straight truck or bus with the engine off and the brakes on should not be more thanL
9. The proper use of the brakes when going down a long steep grade after selecting a proper gear is to brake until your speed is about ____ mph below the posted speed for your safety and release your brake.
10. All air brake equipped vehicles have:
11. With air brake vehicles, the parking brakse should be used:
12. It is not safe to drive a vehicle that has brake drums with cracks that are longer than ____ of the width of the friction area.
13. In ideal conditions a truck or bus with an air brake going at 55 mph would require stopping distance of how many feet?
14. The S-Cam:
15. The driver must be able to see a low air pressure warning which comes on before pressure in the service air tanks falls below _____psi
16. If air pressure is not built up within the correct amount of time, then:
17. Total stopping distance for air brakes is longer than that for hydraulic brakes due to _______ distance
18. Which of these is NOT a proper time to apply the parking brakes?
19. If the spring brakes are on, when should you press the brake pedal?
20. Why drain water from compressed air tanks?

This entry was posted in . Bookmark the permalink.