Method for determining the position of a vehicle on a road
US5790052A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 21, 1997 |
| Grant date | Aug 4, 1998 |
| Priority date | — |
| Expiry date | Jul 21, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08G1/017
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
According to the present invention, a method is proposed for determining the position of a vehicle, in which the vehicle performs a data transmission in the short-range field of at least one beacon. By means of data transmission with at least two or three beacons, an assignment of data transmission and vehicle position within a communications zone can be made. Relative velocities of the vehicle are determined from the data transmission signals sent by the vehicle and received by the beacons, in each instance. The lane or the position of the vehicle sending the data is determined from the velocity ratio or from several velocity ratios. A preferred use is intended to be electronic collection of road use fees or checking of road access entitlement.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.