Patent ID: 7541943
Filing Date: 2009-06-02
Classification: G01S,G08G

Abstract:
1. A method of operating a traffic sensor to collect vehicular traffic data for a road, the traffic sensor having a radar module and an image module both contained in a traffic sensor enclosure, the method comprising: a) operating the radar module to generate radar-based vehicle data regarding a plurality of vehicles passing a sensor field of view based on detection and measurement of the traffic on the road; b) operating the image module to generate image data representing a plurality of images of the road and the traffic on the road; c) determining if a triggering event has occurred; d) transmitting the radar-based vehicle data to a remote location spaced from the traffic sensor and, if the triggering event is determined to have occurred, transmitting the image data to the remote location; and e) if the triggering event is determined to have occurred, comparing the radar-based vehicle data with the image data at the remote location; wherein the image module is a video camera and the image data is not transmitted to the remote location and is not compared with the radar-based vehicle data unless the triggering event is determined to have occurred.