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BDifficulty 2/5

On a conventional four-wheel passenger car, which wheels is the service braking system designed to act on?

Correct answer

On all four wheels.

On all four wheels, with braking-force distribution suited to the vehicle; this does not mean identical force at every wheel at all times. The system may combine friction brakes and regenerative braking where fitted. Disc or drum type alone does not guarantee avoiding lock-up or a particular braking distance. Do not confuse the service and parking systems.

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All options

  • On all four wheels.

  • Only on the front wheels.

  • Only on the driven wheels in every case.

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