Incident-based traffic signal preemption and priority
US11232707B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 28, 2021 |
| Grant date | Jan 25, 2022 |
| Priority date | — |
| Expiry date | Apr 28, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08G1/083
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
Controlling traffic signal preemption includes inputting to a conditional preemption circuit, values of incident parameters that include at least a vehicle unit identifier of a vehicle unit and an incident priority that describes an incident. The conditional preemption circuit determines a vehicle class based on one or more of the plurality of incident parameters. In response to a preemption request communicated from the vehicle unit, the conditional preemption circuit determines whether or not the vehicle unit qualifies for preemption at one or more intersections based at least on the vehicle class, location of the vehicle, and heading of the vehicle unit specified in the preemption request. Phase selection signals are communicated to traffic signal control circuitry at the one or more intersections in response to determining that the vehicle unit qualifies for preemption at the one or more intersections.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.