Monitoring signalized traffic flow
US7991542B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 21, 2007 |
| Grant date | Aug 2, 2011 |
| Priority date | — |
| Expiry date | Apr 10, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S13/91
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
The present invention extends to methods, systems, and computer program products for monitoring signalized traffic flow. A processor in a sensor system or traffic controller interface estimates the time-of-arrival and other traffic flow estimates of one or more vehicles to an intersection stop bar, while the vehicles are within a continuous range of one or more transducers view of the sensor system. A level of efficiency and safety within the signalized traffic flow is estimated by the sensor system based upon one or more of the estimated time-of-arrival and other flow variables estimates and then communicated to the control unit of the traffic signal system. Other flow estimates for each vehicle include but are not limited to: position relative to the stop bar, lane position, velocity, acceleration, time headway and classification.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.