MEPs have called for compulsory requirments to add sound to vehicle vehicles after expressing concerns that they can pose a threat to pedestrians. The draft legislation points to a number of standards that must first be developed.

The move forms part of a package of measures approved by MEPs that address issues with vehicle noise including regulations to reduce noise from conventional vehicles by 25% over eight years. MEPs also recommended the introduction of labels to inform consumers about new cars' noise levels.

Research carried out by the UK’s Transport Research Laboratory (TRL) has found that although the relative number of electric/hyrbid vehicles involved in accidents is smaller, proportionately more of these vehicles hit a pedestrian than conventionally powered vehicles.

The UK’s Guide Dogs has also spoken out on the subject previously, saying that ultra-quiet vehicles pose a threat to individuals who rely on sound to cross the road safely and will not be able to hear the cars moving.