I think St. Charles may run into the problem that road usage by cyclists is specifically allowed in the state traffic code. They just ran another segment of local interest; cyclists and motorists grousing at each other over usage in the city's Forest Park. One cyclist has taken to wearing a video camera to document "close encounters".
I work at nearby Washington University, and the main drag going East-West is very heavily used by cyclists. I see an awful lot of bad behavior....Many well-equipped and high-end riders pay no attention whatever to traffic controls.
I almost center-punched some fellow last week in my police car when I exited from a side street into the path of a rider who was merrily blowing the red light....

We've had several rather nasty accidents involving cyclists in the area; about equally divided between being the fault of the car driver and the fault of the cyclist.