Earlier quoted context omitted.
Haha. Very possible, but also depends if people feel inconvenienced enough to be angry afterwards. If it also improves traffic flow, it might be a win most ways.
Read up on the dynamic tolling political fights. Whoo boy, when you start actually charging people for driving (or inconvieniencing them in any fashion), the flamewars get pretty hot pretty fast.
Now, some folks will be upset they can't go as fast and stuff, but they get used to it.
Some things aren't even obvious to folks, like roads designed to decrease speed. Generally, they are narrower rather than wider. I'm not sure folks will put the two together. Roundabouts? Well-timed streetlights, so long as you are going the speed limit? The first folks complain about, the second gets folks to go the speed limit.
The thing I'd personally implement that would get outcry is increased drivers education, which would increase cost. Id' have everyone take an actual course unless they have previously held a license in recent years. I think some exception could probably be made for farm families (special license for equipment and off-road vehicles) and quell the outcry a little bit.