Why must you pass a knowledge test on air brakes?
The CDL Test consists of a general test, one or more endorsement tests, and an air brakes test. The tests that you will take depend on the license classification that you are obtaining (Class A, B, or C) and the type of vehicle that you will be driving (e.g., Tanker, Double/Triple, Passenger Bus).
How do you do a air brake test?
How to test the air loss rate?
- Make sure the vehicle is on the level surface and the air pressure is within the normal operating range(cut-out and cut-in).
- Apply the wheel chocks.
- Turn the engine off.
- Release the spring brakes.
- Apply and hold the service brakes for a minute.
- Open the window and listen for the air leaks.
Which of the following are you testing when you do the air brake test?
The Air Brake Test covers the different braking systems and tests you on your knowledge of parking brakes, service brakes, emergency brakes, reading low pressure warnings, checking pressure gauges, and more.
How many questions can you miss on the combination test?
20 questions
The California CDL combination test consists of 20 questions, and you’ll need at least 16 correct answers to pass (80%). The test covers the combination vehicles section of the California CDL Manual….COMBINATION TEST CALIFORNIA – PRACTICE TEST.
| Number of questions: | 20 |
|---|---|
| Correct answers to pass: | 16 |
| Passing score: | 80% |
How many questions are endorsements?
Each endorsement exam consists of 30 multiple choice questions. Candidates must pass at least one endorsement exam along with the base exam in order to become certified.
What is the first step of the air brake test?
TEST 1: Parking brake test. Start the bus and let the air pressure build to at least 90 psi. Step on the brake pedal and put the bus into gear. Slowly take your foot off the brake and gently press the accelerator.
