Patent ID: 11967242
Assignee: THE ISLAND RADAR COMPANY
Field: Transport (Mechanical engineering)
Classification: CPC G  B | IPC B  G

Claim 5:
6. A traffic control preemption system for the benefit of a traffic controller at a signalized roadway intersection for vehicle traffic, the system comprising:
a non-track circuit train detection system operable independently from railroad crossing equipment provided at a railroad grade crossing adjacent to but separate from the signalized roadway intersection;
a preemption controller in communication with the non-track circuit train detection system, wherein the preemption controller outputs a preemption signal to the traffic controller, and the traffic controller being operatively responsive to the preemption signal to enhance vehicular traffic flow through the signalized roadway intersection; and
a crossing island detection system including at least one radar-based sensor;
wherein the preemption controller is configured to provide a terminate track clearance signal to the traffic controller in response to a train detection with the crossing island detection system.