Traffic preemption system with headway management

Details Traffic preemption system with headway management Traffic preemption system with headway management

2005-06-16

2008-10-07

Nguyen, Phung (Department: 2612)

Communications: electrical

External condition vehicle-mounted indicator or alarm

Transmitter in another vehicle

C340S902000, C340S906000, C701S117000

Reexamination Certificate

active

07432826

ABSTRACT:
A traffic-preemption system and method that communicates an identification code from vehicles to a traffic location. Traffic light control equipment, such as a receiver and traffic light circuit at each intersection of a controlled area, is used to manage headway in mass-transit systems as well as to provide traffic light pre-emption for emergency vehicles. Each traffic light circuit in the controlled area has a receiver located at a traffic location and adapted to receive an identification code from a mass-transit vehicle. A decoding circuit responds to the received identification code by attempting to identify the mass-transit vehicle and determine the timing on the identified route that improves an identified vehicle's headway and/or route timing. In response to determining the timing, a traffic-preemption command is generated for a traffic light on the identified route.

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