Vehicle tracking system incorporating traffic signal preemption
Patent 5602739 Issued on February 11, 1997. Estimated Expiration Date: 
November 22, 2015. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
November 22, 2015. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References D316153 D338165 2355607 3550078 3568161 3831039 3886515 System for the demand-dependent control of guided vehicles Computerized dispatching system Remote control system for traffic signal control system Inventors
ApplicationNo. 562352 filed on 11/22/1995US Classes:701/117, Traffic analysis or control of surface vehicle340/906, OVERRIDE OF TRAFFIC CONTROL INDICATOR BY COMMAND TRANSMITTER340/989, At remote location342/456, Having traffic control342/457, Land vehicle location (e.g., bus, police car701/207, Employing position determining equipment701/225Determining range without range measurementExaminersPrimary: Park, Collin W.Attorney, Agent or FirmForeign Patent References
International ClassG08G 001/07AbstractAn embedded system controller-based vehicle tracking system using vehicle positioning. An embedded system controller controls a traffic intersection using an optical system. The embedded system controller receives a vehicle location and a vehicle schedule. The embedded system controller calculates whether the vehicle is on time and reports the on-time status to the driver interface. The driver may -request that the system report a panic or emergency situation to the dispatch center through an external data communications network. The external data communications network may also send vehicle status, such as vehicle position and vehicle condition. A transit company using the system may provide vehicles equipped with the vehicle tracking system with schedules on a daily basis, using a portable data transfer device. The embedded system controller also communicates to the vehicle data network for the communication of vehicle position. A global positioning system receiver may be used to provide the position of the vehicle to the embedded system controller.Other References
Field of SearchVEHICLE POSITION INDICATIONAt remote location Vehicle's arrival or expected arrival at remote location along route indicated at that remote location (e.g., bus arrival systems) OVERRIDE OF TRAFFIC CONTROL INDICATOR BY COMMAND TRANSMITTER TRAFFIC CONTROL INDICATOR Position indicating (e.g., triangulation) Traffic Having traffic control Land vehicle location (e.g., bus, police car | |
