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Automotive glossary

Speed Limiter

A speed limiter stops the car from exceeding a speed set by the driver.

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What is Speed Limiter?

The driver sets the maximum speed and can still drive below it freely. Pressing the accelerator fully (kick-down) usually overrides it temporarily. Some systems can adopt speed limits from traffic sign recognition. In the EU, new cars must have intelligent speed assistance, which warns or limits based on speed limits, while the manual speed limiter is a separate driver-set function.

How it works

The engine control unit limits power once the set speed is reached.

Why it matters for your car

On steep descents the car can exceed the set speed, because most limiters do not brake. The driver remains responsible for keeping to the limit.

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