[newaccount74]

You are much more likely to catch your fall with your hands when you have an accident with your city bike vs a road bike.

Biking at less than 25km/h just isn't that dangerous (unless a car hits you)

[fsckboy]

being more likely to catch your fall needs to be computed against how likely the falling is, and how likely injury is. This just confuses things, much easier to look at how many injuries occur.