Model based method to assess road curvature effect on travel time and comfort for route planning
US8583340B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 2, 2012 |
| Grant date | Nov 12, 2013 |
| Priority date | — |
| Expiry date | Oct 2, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01C21/3492
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Methods and systems for assessing the effect of road curvature on the travel time and the comfort level of a path determined by a ground based route planning system. The methods and systems identify a path and determine an allowable speed profile of the path, wherein the allowable speed profile satisfies a cross track acceleration constraint. Thereafter, the methods and systems determine an optimal speed profile of the path, wherein the optimal speed profile satisfies both an along track acceleration constraint and a speed constraint. Using the optimal speed profile, the road curvature of a path may be factored into a determination of the traversal time of the path. Additionally, using the optimal speed profile, the road curvature of a path may be used to derive a comfort level of the path. The optimal speed profile may be further used to provide driver assistance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.