Method and system for determining a deviation in the course of a navigable stretch

US9470534B2 · kind B2 · utility

Assignee

• TomTom Development Germany GmbH · DE

Inventors

• Arne Kesting · Berlin, DE
• Stefan Lorkowski · Berlin, DE
• David Schilling · Berlin, DE
• Nikolaus Witte · Berlin, DE

Key dates

• Filing date: Sep 19, 2013
• Grant date: Oct 18, 2016
• Expiry date: Sep 19, 2033

Classification

• Technology area (CPC G): Physics
• CPC primary: G06V20/176
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A method and system for identifying a lateral deviation in the course of a road segment is described. Positional data is collected from a plurality of vehicles travelling along a road stretch. A map matching error associated with the position data is used to determine an average map matching error and average absolute map matching error for travel along the road stretch. A lateral deviation in course is identified when the average map matching error measures are both above a given threshold, and where the detected deviation is of a given minimum length. Other indicators of deviation can be considered including a direction of the possible deviation, and impact on travel in the opposite driving direction. Data relating to the determined deviation is generated, including a speed of travel through the deviated region, and used to enhance traffic information.