It reminds me of how here in the US we often overuse signage and other markings on roads to 'prevent' accidents but roads with less markings that are obvious and direct tend to have less accidents by comparison. I wonder if part of the problem with American roads is the fact we assume people need information they don't need or use. I know that roads here aren't actively calmed by changing the quality of the road (roughness, width) and that often people ignore or outright get confused by whatever signage and markings are put up.