From MPH Industries, the Ranger traffic radar unit can measure the distance of a vehicle in addition to its speed, functionally making if a cross between a traffic radar and a lidar (laser) unit. Ranger combines the ease of use and multi-target measurement capability of a traditional traffic radar with the positive target identification of a lidar. Ranger uses the traditional Doppler principle to determine speeds, so it takes advantage of all existing radar case law. However, its special microwave beam allows the operator to know the exact distance of each target it measures, allowing better target identification and tracking. In addition, Ranger has a feature called SafetyZone. When activated, SafetyZone continuously monitors the area behind the patrol vehicle, searching for drivers who fail to slow down in response to the vehicle's emergency lights. When a dangerous vehicle is detected, Ranger activates a warning device outside of the patrol vehicle to warn the officer of the danger.
