ALEXANDRIA, Va., March 12 -- United States Patent no. 12,250,472, issued on March 11, was assigned to ALSTOM Holdings (Saint-Ouen-sur-Seine, France).

"Surveillance system for a road with alternating units and associated method" was invented by Pascal Poisson (Sceaux, France), Vincent Bonnevay (Lyons, France), Benedetto Carambia (Florence, Italy), Andrea Del-Chiaro (Florence, Italy), Antonio Malagutti (Bologna, Italy) and Andrea Malesci (Florence, Italy).

According to the abstract* released by the U.S. Patent & Trademark Office: "A surveillance system for traffic on a road includes a number of surveillance units. Each of the surveillance units is mounted at height, and includes at least one road traffic detection sensor. The surveillance u...