Automatic determination of traffic signal preemption using GPS, apparatus and method
US6243026A · kind A · utility
70Cited by
7References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 3, 1999 |
| Grant date | Jun 5, 2001 |
| Priority date | — |
| Expiry date | Nov 3, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S19/41
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
For qualification for traffic preemption an area is defined and if the vehicle is in the area it can obtain preemption. The vehicle's position is determined, in one embodiment, by use of differential GPS.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.