Radio signals to help blind people, replacing sound.
The learning period for "vehicles don't make noise at speeds that can kill you" has already begun. Priuses have been around for 10 years.
Re:The rise of fake engine noise
by JoeAltmaier on Friday January 23, 2015 @10:40AM
(#8935340)
Until a sizeable fraction of the cars on the road are silent, the learning period has not yet significantly begun.
We've been trained as a people to respond to environmental cues. The learning period to adjust to different cues (beeps, phone apps etc) is another phrase for 'lots of people get hit by silent cars'.
I'd suggest a period of dual cues - make noise, AND whatever else we imagine could help us not get run over. Eventually the noise part might fade away.