Patent ID: 7876260

Claim:
A system for preventing light pollution, comprising: a radar unit configured to monitor a volume surrounding or containing at least one obstruction, the at least one obstruction having one or more obstruction lights; a master radar detection processing unit in communication with the radar unit, the master radar detection processing unit configured to process radar detection information from the radar unit and to count the number of vehicles entering and leaving the monitored volume, the master radar detection processing unit further configured to generate one or more control signals based on the processed radar detection information; and a plurality of obstruction light controller units each configured to operate an obstruction light based on the one or more control signals, the master radar detection processing unit further configured to transmit a control signal of the one or more control signals over a network of obstruction light controller units, to at least one of the plurality of obstruction light controller units to activate at least one of the one or more obstruction lights in response to the master radar detection processing unit determining that the number of vehicles that have entered and have vacated the monitored volume is not equal.