James L England

US Patent:

7706965, Apr 27, 2010

Filed:

Sep 28, 2006

Appl. No.:

11/540342

Inventors:

Oliver B. Downs - Redmond WA, US
Alec Barker - Woodinville WA, US
Craig H. Chapman - Redmond WA, US
James Allen England - Bellevue WA, US

Assignee:

Inrix, Inc. - Kirkland WA

International Classification:

G08G 1/00

US Classification:

701117

Abstract:

Techniques are described for assessing road traffic conditions in various ways based on obtained traffic-related data, such as data samples from road traffic sensors (e. g. , physical sensors that are near or embedded in the roads) and/or from vehicles and other mobile data sources traveling on the roads. The assessment of road traffic conditions based on obtained sensor data readings and/or other data samples may include various filtering and/or conditioning of the data samples, and various inferences and probabilistic determinations of traffic-related characteristics of interest. Assessing obtained data may further include determining traffic conditions (e. g. , traffic flow and/or average traffic speed) for various portions of a road network in a particular geographic area, based at least in part on obtained data samples.