Just imagine the terror a blind person must feel knowing there multi thousand pound invisible cars, driven by your average joe.
Yes all cars including "luxury" should be included in any legislation regarding pedestrian safety.
Just a stone in the tread would make a difference. ding isn't right though, makes you think it is a bicycle or something.
Would like to entertain something besides noise, but have no clue what that is. One loud bike and all the other vehicles become invisible. If you make the noise dynamic then all the cars would get instantly as loud as the loudest vehicle and, well, screw that.
And I don't know if putting mars lights on all the vehicles works for the deaf and everyone else, to look at a complimentary siuation, after looking into
DRLs (they have a very significant negative effect on pedestrian safety as far as I can tell) it makes me wonder if adding noise would have the intended effect.