The present invention concerns that of a new and improved motorcycle-emergency vehicle detection and notification system for use when a motorcycle is in operation in vehicular traffic. As a result, costly and tragic accidents are prevented and, more importantly, precious lives are saved as the system gives a clear indication to avoid a lane change, and to yield to the motorcyclist or emergency vehicle as they approach. By offering both an audible and visual indication that it is, or is not, safe to change lanes, the present invention adds significantly to the safety of a vehicle when driving along streets and highways, which are becoming increasingly congested.