So stop hooking your driver

This is what the new electric cars from Daimler sound like

by Thomas Pentzek on 07/17/2019

This is what the electric models from Mercedes-Benz sound like from now on.

Since July 1st, all electric vehicles have to be audible even when driving slowly in traffic. Daimler has now presented the sounds for the next generation of electric cars that sound engineers have developed.

Since the beginning of the month, all certified hybrid, electric and fuel cell vehicles must emit an acoustic warning signal. The Acoustic Vehicle Alerting System (AVAS) is intended to warn other road users about slow-moving electric vehicles. Daimler has now presented the latest generation of warning signals.

According to the company, this should be an unobtrusive, yet easily perceptible noise that the vehicles make up to a speed of 30 km / h. With the electric SUV EQC, the sound engineers are said to have concentrated on emphasizing the noises already present in the vehicle and not giving it a “fiction sound”.

The German automobile manufacturer will initially optimize the noises in simulations and on the acoustic test bench. "The main aim is to develop the acoustic properties of the relevant vehicle components into a coordinated overall vehicle", describes Daimler.

Legally prescribed background noise for electric vehicles

The AVAS is intended to ensure that the quiet electric vehicles offer a safe background noise that blends in with the overall vehicle noise. The noises should be discreet and easily audible, but not have a disruptive effect in the long run.

The conditions for the sound are described in detail. According to EU regulations, the minimum and maximum volume must be observed and the speed range in which the noises must be audible. However, it is up to each manufacturer to decide how their own background noise should sound.

Daimler has decided to change the background noise for the EU, China and Japan only slightly. In the USA, however, other regulations apply, which, for example, specify a different volume. There the vehicles must already make a noise when a gear is engaged in the vehicle. The noise has to get louder in the USA from a standstill up to 30 km / h. However, the AVAS regulations have one thing in common in almost all countries: the system must not be able to be switched off.