ADVANCED PROTECTION SYSTEM

radar detectors; combined radar and laser detectors; receiver and alarm apparatus for vehicles to alert the driver thereof of the near presence of emergency vehicles, locomotives, and the like, having transmitters for radio or microwave transmissions for which the receiver is adapted to receive and decode, and for road hazards having like transmitters located nearby; anti-collision apparatus namely receiver and alarm circuits for vehicles, locomotives, and the like to warn of the closing approach of other vehicles, locomotives, and the like, which other vehicles, locomotives and the like, carry similar apparatus so as to send, receive, and decode signals one from another; self-contained devices containing combinations of radar detectors, radar and laser detectors, receiver and alarm apparatus, and anti-collision apparatus, as defined above