What is a wig wag?

Question

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.

Accepted Answer

A type of warning system

Answer

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

Answer

A noise made by air brakes when used

Answer

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

What is a wig wag?

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