Was it just infrastructure, or did they also invest somehow in education? Maybe Paris could learn from La Rochelle and avoid what didn't work out.

My point is that people should really have this ingrained, and not put down the phone / not do stupid things just because there's a cop looking. Because as soon as the cop turns away / is on break, the bad behavior happens again. Also, being on the lookout for cops so that you can scroll your FB feed without getting fined only detracts from paying attention to the road.