Michigan CDL Air Brakes Practice Questions - Michigan CDL Air Brakes Knowledge Test Exam

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On the Michigan CDL Air Brakes test, how long should it take for an air brake system to build pressure from 85 psi to 100 psi at engine governed RPM?

About 45 seconds Not more than 45 seconds (typical FMCSA guideline) About 5 minutes About 15 seconds

Correct Answer:

Not more than 45 seconds (typical FMCSA guideline)

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