On a vehicle with air brakes, a visible low-pressure warning for the driver must activate before the pressure in the service tanks falls under a given value. What is that value, in psi?

Answer options

Why

Vehicles with air brakes must have a low-air warning, usually a red light that may come with a buzzer, which turns on before tank pressure drops below 60 psi; some manuals give the figure as 55 psi. If it comes on, stop and park safely as soon as you can.

About this question

Topic: Air brakes   License: CDL

Part of these practice sets:

• Checking and Using Air Brakes

Where it applies: Asked in every state.

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

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