SGI Class 1 Practice Questions - Saskatchewan Class 1 Commercial Driver Licence Written Exam

Why is it dangerous to exhaust the air from the air tanks too quickly by rapidly pumping (feathering) the brakes?

It will damage the air compressor crankshaft It can cause air pressure to drop below the safe operating level, triggering the emergency spring brakes It leads to engine overheating It will blow out the trailer lights

Correct Answer:

It can cause air pressure to drop below the safe operating level, triggering the emergency spring brakes

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