Cell phone service warns of speed traps

By The Associated Press

In a modern equivalent of flashing your headlights to warn other motorists of police speed traps, you can now warn fellow drivers with a cell phone or personal digital assistant about speed traps, red-light cameras and other threats to ticket-free driving.

And as you approach a known threat, the same service sends an audio alert on your mobile device.

The developer of Trapster, Pete Tenereillo, says the system, which requires punching in a few keys such as "#1" to submit information to Trapster's database, should comply with laws banning talking on cell phones.

Tenereillo insists he isn't encouraging motorists to break the law or drive dangerously, adding that drivers who speed are bound to do so anyway.

And he says police officials he has talked to haven't complained about the service because it encourages drivers to slow down. (The International Association of Chiefs of Police did not respond to requests for comment.)

The free service can automatically detect location using mobile devices' GPS capabilities or tap their Wi-Fi and get location from a database run by Skyhook Wireless. (Skyhook sends trucks up and down streets to scan for home wireless routers or commercial hot spots and record the unique identifying code and location of each.)

Information about red-light cameras and where police tend to operate speed traps is kept in Trapster's database indefinitely. Information about active speed traps is kept for an hour, with the idea that officers may move on.

Users can choose the types of cameras or other hazards for which they want alerts.

To discourage pranksters or police from flooding the system with bogus locations, users can rate others on the accuracy of their contributions. Those who get better ratings carry more weight.

Trapster can be used with about 10 wireless platforms, including Nokia's smart phones, BlackBerry units from Research In Motion and devices using Microsoft's Windows Mobile. (Microsoft is the publisher of MSN Money.)

This article was reported and written by Anick Jesdanun for The Associated Press.