Practice question

What is 'brake lag distance' in an air brake system?

The distance the vehicle travels between pressing the brake pedal and the moment compressed air flows through the lines to apply the brake shoes (roughly 0.4 seconds)
The distance required to replace worn brake pads
The length of the air hoses between tractor and trailer
The delay in releasing the parking brake lever

Answer: A — The distance the vehicle travels between pressing the brake pedal and the moment compressed air flows through the lines to apply the brake shoes (roughly 0.4 seconds)

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