The phrase “speed bump” does not do justice to the speed bumps in México. “Speed hillocks” might be more appropriate.
Speed bumps are in place not only in cities but out on the open highway in many places. They are everywhere. As late as July I was still having trouble picking up the signs warning of a forthcoming speed bump in the highway. When I hit them at speed, I would damned near tear out the undercarriage of the truck. On our trip to Real de Catorce, Fabien and Maga would scream at me that a speed bump was coming. They got tired of hitting the ceiling of the cab of the truck.
In San Miguel de Allende crosswalks are ingeniously incorporated into the speed bumps. I must say that it works quite well.
As seems to be the case with all human activity, speed bumps have an environmental impact. The constant slowing down and speeding up of vehicles increases emissions. There is an experiment going on with smart speed bumps with sensors in a carpet in advance of the speed bump. If the car approaching is traveling at an acceptable speed, the bump is lowered into the pavement. If the car is speeding, the bump rises to send the speeding vehicle airborne. My only question is, where will the money come from to install those all over México?
For my German speaking friends and others, please check out this video.