ALEXANDRIA, Va., Aug. 26 -- United States Patent no. 12,397,832, issued on Aug. 26, was assigned to METROM RAIL LLC (Crystal Lake, Ill.).

"Rail vehicle signal enforcement and separation control" was invented by Richard C. Carlson (Village of Lake in the Hills, Ill.), Kurt A. Gunther (Round Lake Heights, Ill.) and Marc W. Cygnus (Mundelein, Ill.).

According to the abstract* released by the U.S. Patent & Trademark Office: "Systems and methods are provided for train operation control and enforcement. A vehicle mounted system for train control may include a vehicle mounted data radio mounted on a railway vehicle and a vehicle mounted controller. The vehicle mounted controller may be connected to the vehicle mounted data radio. The vehicle mou...