Bikers vs. pedestrians

The Chicago Sun-Times reports that on the popular Lakefront Trail, frequent accidents occur, because bicyclists ride too fast, and pedestrians don't look before crossing. It's hard to mix traffic of such varying speed. And it seems very difficult to segregate use in the same spaces. This is a problem in Battery Park City as well. It's unlikely to be a problem with the forthcoming Metropolitan Branch Trail in DC, because while appealing to bikers, it's too far a walk from where people want to go to be attractive to pedestrians who have far better places to walk in DC anyway.