While you are driving, the warning light and buzzer for low air pressure suddenly come on. What should you do?

Answer options

Why

The warning means air pressure has fallen below a safe level, and if it keeps dropping, the spring brakes can come on by themselves, usually somewhere between 20 and 45 psi. Stop in a safe spot while you still have control rather than waiting for the brakes to lock on in traffic.

About this question

Topic: Air brakes   License: CDL

Part of these practice sets:

• Checking and Using Air Brakes
• CDL Practice Exam

Where it applies: Asked in every state.

Practice the whole set

This question is part of Checking and Using Air Brakes (15 questions). Take the full set and check your score.

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