ALEXANDRIA, Va., Feb. 19 -- United States Patent no. 12,228,473, issued on Feb. 18, was assigned to Nissan North America Inc. (Franklin, Tenn.).

"Tire tread depth estimation system and method" was invented by Vikram Krishnamurthy (Marietta, Ga.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A tire tread depth estimation system for a vehicle includes a light source, a camera, an electronic controller, and a display. The light source is configured to emit light onto a surface of a vehicle tire. The camera is configured to capture an image of the surface of the vehicle tire. The electronic controller is connected to the light source and to the camera. The controller is configured to estimate a depth of a tire t...