Adaptive traffic signal preemption
US9299253B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 19, 2014 |
| Grant date | Mar 29, 2016 |
| Priority date | — |
| Expiry date | Aug 3, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08G1/087
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
The disclosed approaches for processing traffic signal priority requests include receiving traffic signal priority requests from a vehicle. The number of stopped vehicles at the intersection and on an approach to the intersection is determined in response to receiving each priority request. An activation threshold is computed as a function of an estimated-time-of-arrival (ETA) threshold and the number of stopped vehicles. A vehicle ETA of the vehicle at the intersection is determined in response to each priority request. In response to the vehicle ETA being less than the activation threshold, the priority request is submitted for preemption service processing at the intersection. In response to the vehicle ETA being greater than the activation threshold, submission of the priority request is bypassed for preemption service processing at the intersection.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.