Speed bumps are the perfect way to punish people for cycling. Using a car or motorbike, they aren’t really a problem. But they force cyclists to slow down or swerve to the edge, they give an uncomfortable jolt, and they unbalance.

The justification for adding speed bumps to roads at all is weak, but the fashion now seems to be adding them everywhere. They could at least be done better.

There should either be a flat section in the middle of the road for cyclists. When they need to keep to the left or the right or the road, they need to suffer.

But then what about ambulances? There could alternatively be two narrow flat sections, at the same gauge as ambulance wheels. This is good for people with (for example) spinal injuries, and also serves cyclists who are keeping the left or right.

This answer begs an entirely new possibility. Ambulances could have a special wheel gauge, which other vehicles cannot use. The speed bumps can be set to the same gauge. So only ambulances and two-wheelers can travel unimpeded.

With a small bit of legislation, speed bumps could be useful. They could work as they are supposed to.