Trapster is a website that uses Google Maps to show you where police speed traps are located. Combine this with a GPS-enabled cell phone and you can get a warning whenever you are approaching a “speed trap”. Users of the website can mark new speed traps they encounter to warn other users of the site. Here is a video demo of Trapster in action:
Do not include the “[" or "]” characters above when you enter the search coordinates in Google Maps. Here is an example of some coordinates and how you would enter them into Google maps: