ALEXANDRIA, Va., Sept. 10 -- United States Patent no. 12,409,856, issued on Sept. 9, was assigned to GM GLOBAL TECHNOLOGY OPERATIONS LLC (Detroit).

"Autonomous driving system for creating a planned route based on messages displayed by road signs" was invented by Rouhollah Sayed Jafari (Troy, Mich.) and Alireza Esna Ashari Esfahani (Novi, Mich.).

According to the abstract* released by the U.S. Patent & Trademark Office: "An autonomous driving system for a vehicle includes one or more controllers that execute instructions to monitor image data captured by one or more cameras. In response to detecting a road sign in the image data, the controllers interpret a message displayed by the road sign. The controllers classify the message conveyed b...