VDOT Traffic Signaling

Fault-tolerant Network

DSI worked closely with the City of Newport News Engineering team to design and install a fault-tolerant, Ethernet network for the Traffic Signaling System throughout the city. This network consists of three types of Ethernet Switches: Core L3 Switches (Alcatel-Lucent OS9702E), Aggregation L3 Switches (Alcatel-Lucent 6855), and L2 Field Switches(RuggedCom RS900G). This network allows the more than 250 traffic intersections and their respective signal controller and ITS field devices to communicate over IP and be centrally managed and maintained.