The Balbigny-La Tour de Salvagny section of the A89 was opened to traffic in January 2013, completing the motorway that crosses France east to west from Bordeaux to Lyon. This 50 km section comprises three dual-tube tunnels. Cegelec Mobility and GTIE Transport installed the equipment (electrical, lighting, fire protection, signalling, ventilation, video surveillance, radio communication and automatic incident detection systems) and designed and implemented the tunnel operating system. Axians rolled out the 10 Giga Ethernet IP multiservice communication networks along the section and is responsible for maintaining and operating them. VINCI Construction and Eurovia also took part in the construction of the final section of the A89, which took four years to complete.