Q
74. The driver must be able to see a low pressure warning which comes on before pressure in the service air tank falls below:
Air Brakesmedium
A60 psi
B80 psi
C100 psi
Detailed Explanation
The correct answer is "60 psi". This is based on federal CDL regulations and safety standards.
Correct Answer: 60 psi
Advertisement
Ready to practice for real?
Take our free, full-length Air Brakes practice test. Simulates the actual DMV exam with timed questions.
Start Practice TestRelated Questions
56. The S-cam forces the brake shoes away from one another and presses them against the inside of the brake drum. It is called the S-cam because:
air-brakesmedium
53. When the air pressure falls to the minimum pressure allowed in the system, the governor prevents more air from escaping the air tanks.
air-brakesmedium
66. What factors can cause brakes to fade or fail?
air-brakesmedium
50. The parking brake applies and releases:
air-brakesmedium
65. The use of brakes on a long steep downgrade is only a supplement to the braking effect of the engine.
air-brakesmedium
Advertisement