“The voice of the Blind”
Recognizing the dangers that quiet hybrid and electric vehicles (HEVs) pose for vulnerable road users, the Government of Canada has created the Canada Motor Vehicle Safety Standard (CMVSS) 141. This standard requires HEV manufacturers to equip vehicles with an Acoustic Vehicle Alerting System (AVAS), which creates artificial sounds comparable to conventional vehicles.
www.cnib.ca/en/blog/new-sound-requirements-hybrid-and-electric-vehicles