[Gibbon1]

Something I've seen noises about is time of flight systems for traffic. I think the idea is you can put those systems on traffic lights, cars, bicycles, and pedestrians and then cars can know where those things are.

[bluGill]

You can't do that though. Someone will not wear it - and they shouldn't have to.

[dzhiurgis]

Or instead of reinventing the world you could just use cameras