An Acoustic Vehicle Alerting System (AVAS) is a sound-emitting safety feature designed specifically for electric and hybrid vehicles. Its main function is to produce an artificial sound at low speeds to alert pedestrians and other road users to the vehicle’s presence.
Because electric and hybrid vehicles operate quietly — especially at speeds below 25 km/h — pedestrians may not hear them approaching, leading to potential accidents. AVAS bridges this safety gap by generating a recognizable and continuous sound, ensuring that people nearby are aware of the vehicle’s movement.
How AVAS Works
Automatic Activation: The system automatically turns on when the vehicle starts moving or is travelling at or below 25 km/h.
Sound Emission: It produces a specific sound that varies with the vehicle’s speed and acceleration, giving pedestrians an intuitive sense of whether the car is approaching, slowing, or reversing.
Deactivation at Higher Speeds: Once the vehicle exceeds 25 km/h, the system usually turns off automatically because natural tire and wind noise become sufficient to alert others.
Purpose and Benefits
Pedestrian Safety: Helps prevent accidents, particularly for visually impaired individuals who rely on auditory signals.
Public Awareness: Makes electric and hybrid vehicles more noticeable in urban environments, parking lots, and residential areas.
Global Standardization: Supports compliance with international safety regulations already in place in regions like the EU, US, and Japan.
Implementation in Australia
Starting 1 November 2025, all new electric vehicles sold in Australia must come equipped with an AVAS as part of the country’s vehicle safety standards. This move aligns Australia with global efforts to enhance pedestrian safety while promoting the wider adoption of electric mobility.
In short, the Acoustic Vehicle Alerting System (AVAS) is a simple yet essential innovation that ensures quiet electric vehicles remain safe for everyone on the road.