Michigan CDL - Air Brakes Practice Exam

Question: 1 / 400

What is the maximum air leakage rate for a triple combination vehicle during a static leakage test?

2 psi in one minute

5 psi in one minute

The maximum air leakage rate for a triple combination vehicle during a static leakage test is established at 5 psi in one minute. This standard is critical for ensuring that the air brake system maintains sufficient air pressure for effective operation. A leakage rate above this level may indicate a malfunction within the air brake system, which can compromise safety.

Maintaining this maximum leakage rate is essential for operational reliability because a properly functioning air brake system ensures that a vehicle can safely come to a stop when necessary. If the leakage rate were to exceed this standard, it could lead to issues like insufficient brake pressure, delayed stopping times, and an increased risk of brake failure. Thus, ensuring that leakage rates remain within this limit is vital for the safety of the vehicle and compliance with regulatory standards.

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3 psi in one minute

4 psi in one minute

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