A straight truck (no trailer) air brake system should not leak at a rate of more than ___ psi per minute with the engine off and the brakes released.

2. Section 5.3: Static leakage rate (brakes released) for a single vehicle is 2 psi per minute.

A straight truck (no trailer) air brake system should not leak at a rate of more than ___ psi per minute with the engine off and the brakes released.

ANSWER BREAKDOWN
  • A. Incorrect. "1" is not correct. Static leakage rate (brakes released) for a single vehicle is 2 psi per minute.
  • B. Correct. Static leakage rate (brakes released) for a single vehicle is 2 psi per minute.
  • C. Incorrect. "3" is not correct. Static leakage rate (brakes released) for a single vehicle is 2 psi per minute.
  • D. Incorrect. "4" is not correct. Static leakage rate (brakes released) for a single vehicle is 2 psi per minute.