Method and arrangement for validating speed limit information for a road vehicle

US11670091B2 · kind B2 · utility

Assignee

• ZENUITY AB · SE

Inventors

• Sebastian Thelen · Mölndal, SE
• Diana Amza · Gothenburg, SE
• Eric Alexandersson · Gothenburg, SE
• Jens Dackenberg · Gothenburg, SE
• Lisa Lu · Skintebo, SE
• Cornelis Berger · Gothenburg, SE
• Erik Israelsson · Gothenburg, SE

Key dates

• Filing date: Mar 19, 2020
• Grant date: Jun 6, 2023
• Expiry date: Mar 1, 2041

Classification

• Technology area (CPC G): Physics
• CPC primary: G08G1/096775
• WIPO field: Control
• WIPO sector: Instruments

Abstract

Described herein is a method of determining a current location speed limit in a road vehicle (1) speed limit information system (20). The method comprises receiving (6): one or more signals corresponding to respective candidate speed limits (7); and one or more signals related to observed vehicle dynamics affecting changes (8) in one or more vehicles (1, 5) pre and post a most recently passed anticipated speed limit change location (2). It further comprises evaluating (9) the confidence of the different candidate speed limits (7) based on the signals related to observed vehicle dynamics affecting changes (8) and validating (10a) or discarding (10b) candidate speed limits (7) based on the evaluated confidences. A signal (13) corresponding to a highest confidence validated speed limit is output.