Monitoring and diagnostics of traffic signal preemption controllers
US8610596B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 11, 2010 |
| Grant date | Dec 17, 2013 |
| Priority date | — |
| Expiry date | Jan 18, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08G1/13
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
Management of traffic signal preemption control equipment. In one approach, logged preemption data is periodically read from each of a plurality of intersections having respective preemption controllers for preempting traffic signals at the intersections. The logged preemption data at an intersection describes operational states of the preemption controller and each vehicle control unit that submitted a preemption request at the intersection and data describing each individual preemption request. The logged preemption data read from the plurality of intersections are stored in a database. The database is monitored for data indicative of changes in operational status of the traffic signal preemption control equipment. In response to the data indicating a change in operational status, data descriptive of the change are output.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.