Mexico's Decano Industries has a speed bump that could make the deterrents a lot less obnoxious. The concept is simple: if a car is going slow enough, the speed bump stays retracted and allows it to continue. Go too fast and — bam! — you hit the speed bump.
The system uses metal plates that measure the force of an impact against them. Cars going slow enough will cause the plates to lower, though any faster and the speed bump will remain where it is and remind the driver in that lovely way we're all used to.
Decano says that the system costs $1,500 per bump to install and will not only see a rise in happier drivers, but also decrease fuel consumption.
Check out the demonstration video below (which, really, looks like it was done with MS Paint).