Air Brakes
This endorsement is required for driving a vehicle with air brakes. To receive this endorsement, applicants must pass a test. The test consists of 25 multiple choice questions. Each question has four answer choices. To pass, the applicant must answer at least 20 questions correctly. Test questions come from the Texas Commercial Motor Vehicle Drivers Handbook. Questions come from chapters covering: Air Brakes. The Air Brakes endorsement may be used with the Class A, B or C CDL.
Number of Questions
25
Passing Score
20
12345678910111213141516171819202122232425
To Pass
0
Correct
0
Incorrect
0
11. What do anti-lock brakes do?
Help a driver avoid wheel lockup
Lock up the front wheels
Prevent a vehicle from accelerating while traveling downhill
Prevent a vehicle from accelerating while traveling uphill
More ›
12. To stop in a vehicle that uses air brakes, the driver should:
Pull the brake pedal up.
Engage the brake lever.
Pull the air brake lever.
Push the brake pedal down.
More ›
13. Spring brakes come on:
When the brakes are noisy.
When the tires have minimal tread depth.
When a control on the dashboard is activated.
When too much air pressure is lost.
More ›
14. When you need to stop in an emergency, you should:
Expect your vehicle to slow down more quickly than usual.
Stop in a way that keeps your vehicle in a straight line.
Lock the wheels and skid to a stop.
Stop in a way that turns your vehicle.
More ›