| 摘要 |
An clear-cross crossing system for use by emergency vehicles that includes a traffic light attachable strobe light/receiver unit that is attachable to and existing traffic signal and a transmitter unit mounted to the dash board of an emergency vehicle which transmits an activation signal to the strobe light/receiver unit to activate the unit and to cause the unit to override the existing traffic signal to generate a green light signal in the direction of the oncoming emergency vehicle.
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