Data mining in a digital map database to identify speed changes on upcoming curves along roads and enabling precautionary actions in a vehicle
US10648817B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 30, 2008 |
| Grant date | May 12, 2020 |
| Priority date | — |
| Expiry date | Jan 31, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09B29/007
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Disclosed is a feature for a vehicle that enables taking precautionary actions in response to conditions on the road network around or ahead of the vehicle, in particular, a speed limit change that occurs between a straight road section and a curved road section. A database that represents the road network is used to determine locations where a speed limit change occurs between a straight road section and a curved road section along a road. Then, precautionary action data is added to the database to indicate such a location. A precautionary action system installed in a vehicle uses this database, or a database derived therefrom, in combination with a positioning system to determine when the vehicle is at such a location, at which a precautionary action is taken by a vehicle system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.