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BDifficulty 3/5

What must a car’s secondary braking function achieve if service braking fails?

Correct answer

Stop the vehicle within a reasonable distance with controllable braking action.

Allow the vehicle to stop within a reasonable distance with controllable braking action. This is the General Vehicle Regulations annex VIII definition. Do not confuse it with the parking function or infer that every system acts exclusively on exactly two wheels: configuration depends on the vehicle.

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  • Stop the vehicle within a reasonable distance with controllable braking action.

  • Only hold an already parked vehicle stationary.

  • Provide no braking when the service brake fails.

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