ALEXANDRIA, Va., Dec. 31 -- United States Patent no. 12,509,834, issued on Dec. 30, was assigned to Faiveley Transport Italia S.P.A. (Piossasco (Torino), Italy).

"Route cleaning system" was invented by Matteo Frea (Turin, Italy) and Luc Imbert (Turin, Italy).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method for assessing contamination of a route includes imposing a first sliding value lower than a first threshold between one or more first wheels of a vehicle and the route, the one or more first wheels being the head the vehicle, imposing a second sliding value greater than a second threshold between one or more second wheels of the vehicle and the route, the one or more second wheels following the one o...