Alberta Air Brake (Q) Knowledge Test Practice Questions - Alberta Air Brake (Q Endorsement) Knowledge Test Exam - Variant 2

What is a key safety advantage of spring parking brakes over air-only parking brakes?

They eliminate the need for any service brakes They remove brake lag completely They can hold by mechanical spring force that does not leak away like air pressure They make pre-trip inspections unnecessary

Correct Answer:

They can hold by mechanical spring force that does not leak away like air pressure

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