> disabled or otherwise mobility impaired persons I'm willing to extend acceptance to electric trikes and even golf carts. That should be sufficient. Even for

> disabled or otherwise mobility impaired persons I'm willing to extend acceptance to electric trikes and even golf carts. That should be sufficient. Even for those, you want to make sure they don't start to crowd out smaller vehicles though. I propose a kinetic energy limit of 6 kJ, including mass of rider(s). That's 100 kg (220 lbs) moving at 11 m/s (25 mph). For comparison, a modest handgun round apparently exits with a muzzle energy of about 400 J. So we're still talking about significant energies. Beyond that -- where physical disability causes a risk to others, we do limit rights. If you have epilepsy, you may lose your license. If you are unable to move without the aid of a massive contraption, you also don't get to use the shared infrastructure, the end. The net result would still be more inclusive overall, simply because these small vehicles would be one to two orders of magnitude cheaper than cars.