Method of assisting driver to negotiate a roadway
US7266438B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 26, 2005 |
| Grant date | Sep 4, 2007 |
| Priority date | — |
| Expiry date | Sep 21, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01C21/3697
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method of assisting a driver to negotiate a roadway by identifying a curve from a map database (12); calculating an estimated negotiable speed for the curve (14); advising the driver of the upcoming curve (16); warning the driver if he attempts to negotiate the curve at a speed that is greater than the estimated negotiable speed (18); and controlling the vehicle (10) in order to attempt to safely negotiate the curve (20). When the curve is identified in advance rather in real-time, identification of the curve, and possibly one or more characteristics of the curve as well as the estimated negotiable speed, may be stored for subsequent access and use (22). Furthermore, the advisory, warning, and control behaviors may be varied based on pre-established or determined conditions (24). Additionally, the actual vehicle state as it pertains to entering and exiting the curve may be determined (26).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.