Hello.
I have some ideas about traffic rules innovation.
Sometime when a tram stands in the middle of the road it's impossible to understand a thing whether these are passengers alight from the tram or the driver just smokes. Anyway there is an essential reason to decrease the speed.

I propose to set light signal from behind of tram. When passengers alight from the tram it lights red. When driver smokes, it lights green. This light signal will allow reducing automobile - pedestrian accident.
Also I propose to certificate speed bumps because it is set by who and where one wants and any size.

That's all.