Maryland CDL Air Brakes Test 1

In a vehicle with dual air brakes, what happens if one system is low on pressure?

The air from the other system will be used to supplement the system with the low pressure. The front or rear brakes may not work properly. All brakes will be inoperable. The low system will use an auxiliary system to fill the tank.

Correct Answer:

The front or rear brakes may not work properly.

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