Driving is about expectations. Drivers can't have 360 degree awareness at all times, so having them be more attune to the existence of cyclists
and pedestrians is important.
As the number of bicyclists on Philadelphia streets has risen, cyclists and city officials have seen a counterintuitive result: The number of bike crashes and deaths has declined.
This "safety in numbers" phenomenon has been documented elsewhere, and safety experts believe it is because motorists become more alert to cyclists when there are more of them.
