Question

What is a wig wag?

Answers

A type of warning system

A tube used to move air from the compressor to the tanks

A noise made by air brakes when used

A part within the braking unit that allows air to move freely

Explanation

A wig wag is a type of low air pressure warning device in an air brake system. It drops a mechanical arm into the driver's view when the air pressure in the tanks falls below 60 psi.

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District Of Columbia Air Brakes

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