You're about to drive a vehicle fitted with air-assisted hydraulic brakes. Why might the brake pedal feel hard when you press it?

You're about to drive a vehicle fitted with air-assisted hydraulic brakes. Why might the brake pedal feel hard when you press it?

The air compressor is not working

Correct answer

DVSA explanation

If the brake pedal is hard to press, this could mean a loss of air pressure or a fault in the air compressor. You should not drive the vehicle until the fault has been repaired.

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