Cyclists Break Far Fewer Road Rules Than Motorists, Finds New Video Study

This is probably due to speed limits:

"Separate studies by the Danish Road Directorate found that two-thirds of motorists routinely flout the law, with breaking local speed limits being the most common offense."

The amount isn't important. The types of road rules broken is what matters.

It's a useless stat when not adjusted per km/mile driven

Why?

This is a video study of a set of traffic lights, it counts violations at those crossings. Why does the distance driven to/from/after/before/elsewhere count, what difference might that make? How might that from elsewhere interact with the the data at the video sites?