Determination of a free-flow speed for a link segment
US10741062B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 7, 2017 |
| Grant date | Aug 11, 2020 |
| Priority date | — |
| Expiry date | Apr 22, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08G1/0141
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A method comprising determining speed-time cluster application histogram data set for a link segment that comprises a plurality of speed-time cluster application histogram data elements, each speed-time cluster application histogram data element identifying a speed-time cluster and an applicable duration of the speed-time cluster for the link segment throughout a histogram duration, for each speed-time cluster application histogram data element, determining a free-flow speed that is representative of a non-congestion speed indicated by the speed-time cluster, determining a historically normalized free-flow speed for the link segment that is a weighted average of the free-flow speed determined for each speed-time cluster application histogram data element weighted by the applicable duration of the speed-time cluster application histogram data element, and identifying a transit speed of the link segment as being the historically normalized free-flow speed is disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.