Waze is a free community based traffic and navigation app. Information may be found at Waze.com. The information that Waze collects as you drive is passed along to other drivers in the area so that they are alerted to traffic jams and hazards. Much of the information is collected passively, just by opening the app on your iPhone. For other information it would be useful to have a second person in the car to record specific information about the hazard, take photos or to fill in missing roads. For more information go to http://www.waze.com