In the Boston urban core (which is the topic of this forum, and where most of these cameras will be installed), more than 50% of trips within city limits are done outside a car. I'd estimate its more like 60-70%. If we had better bike, ped, and transit infrastructure, this could easily be 80+% (a lot of people take ubers and what not because transit is not reliable and biking is unsafe). How about the majority not be in constant state of danger from 2-ton metal boxes just because people can't be bothered to follow the actual law?