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Automotive glossary

Acoustic Vehicle Alerting System (AVAS)

AVAS emits sound from quiet electric and hybrid cars at low speed to warn pedestrians.

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What is Acoustic Vehicle Alerting System (AVAS)?

It is required in the EU. It works up to about 20 km/h. The sound changes with speed. In the EU it has been required for new types since 2019 and for all new quiet vehicles since 2021. In the United States, similar rules apply up to around 30 km/h. The sound is created by a speaker at the front and must meet minimum volume levels.

How it works

A speaker produces artificial sound.

Why it matters for your car

It cannot be permanently switched off. Faults show warnings.

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