The Bicycle Coalition of Greater Philadelphia has created a SeeClickFix map that allows anyone to report a bicycle-related incident to the Philadelphia Police District where the incident occurred. If you are harassed by a motor vehicle, experience road rage, are involved in a crash, or see a chronically blocked bike lane, fill out a report using this webtool so that the report goes directly to the Police District office and 311. Take a look at the instructions for filling out a incident report.
The reports filled out on this map are intended to document the incidents and make the Police Districts aware of bicycle-related incidents as they are occurring. The Bicycle Coalition will also receive a copy of the reports and they will be seen online at the map's webpage.
If you are involved in a crash, always call 911 and make sure an "accident report" is filled out by the responding officer.
Check out BCGP's Report a Problem page for more information on how to report other types of problems (e.g. potholes, etc.)