Speed profile dictionary
US8396663B2 · kind B2 · utility
8Cited by
0References
16Claims
0Family size
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Key dates
| Filing date | Dec 15, 2009 |
| Grant date | Mar 12, 2013 |
| Priority date | — |
| Expiry date | Apr 26, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08G1/0141
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A speed profile dictionary and associated lookup tables are disclosed. A set of distinct speed profiles is defined using a statistical analysis routine. Preferably, the statistical analysis routine uses clustering. The speed profiles are then matched to location codes identifying physical locations on a road network and days of the week. Applications using historic traffic data may use the speed profile dictionary and one or more lookup tables instead of a complete historic traffic database, thereby reducing the amount of memory needed to store historic traffic data.
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