I cycle to work in the Parisian region and most commuters on bikes are quite sensible, surprisingly the vast majority of motorists as well (assuming they can see you)! Most regular adult cyclists now use lights and hi-vis vests. You still get a lot of teenagers and non-regular cyclists who do not use lights, I can't figure out why when they are so cheap and convenient now.
You get cyclists carefully going through red lights and down one-way roads. The biggest danger for pedestrians is not cyclists on the pavement but the number of motorcyclists who use the pavements as high-speed rat runs.
The biggest killer for cyclists is what they call "l'angle de mort", the blind spots around lorries and busses. A lot of people are aware of the blind spots at the sides of lorries but are not aware of the blind spots in front of them.