The modulating control valve is?

2026 Alabama Air Brakes CDL Practice Test 2

Question Number 9

A spring-loaded valve that will let you put on the brakes on slowly if the service brakes fail. There is no such thing. Should not be used because it is very unsafe.

✔ Correct Answer:

A spring-loaded valve that will let you put on the brakes on slowly if the service brakes fail.

2026 Alabama Air Brakes CDL Practice Test 2

Question Number 9

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