5mph is obviously too slow, indicating that perhaps that speed bump was poorly designed. But practically it is impossible to design something that forces cars t

5mph is obviously too slow, indicating that perhaps that speed bump was poorly designed. But practically it is impossible to design something that forces cars to slow down without risking vehicular damage. Speed bumps, speed tables, and chicanes all carry the risk of serious consequences should the driver not slow down. Without those consequences some drivers can and would ignore them. Also worth pointing out that the point of these obstacles is to protect pedestrians. Given the extreme lopsided nature of vehicle to pedestrian crashes, I believe that some risk of vehicular damage is a fair trade to prevent pedestrian fatalities.