Roof-mounted_single_beacon Emergency_vehicle_lighting

since introduction in 1948, rotating beacons have become accepted means of attracting attention one’s vehicle. although use of single beacon in law enforcement has dropped since introduction of light bars, still used police departments, because of lower cost or due tradition. 1 agency continues employ traditional red rotating beacons on patrol cars michigan state police. beacons used on construction equipment when full-sized lightbar unnecessary or impractical attach vehicle.

while many single beacons use rotating lamps or mirrors, others use strobe lights under translucent dome provide omnidirectional flash. smaller , low-cost beacons of latter type, however, blinking incandescent bulb. leds used light omnidirectional beacons.

the single beacon available magnetic mount situations permanent mounting impractical. examples of such situations detectives in unmarked vehicles, volunteer firefighters, or managers @ freight yards use amber light safety. these ‘mag-mount’ beacons round or teardrop-shaped, , referred ‘kojak’ lights after popular 1970s tv detective used one.