Serial wireless IP networks for DOT applications

This work presents the use of commercial off-the-shelf (COTS) wireless Internet technology to meet needs of departments of transportation (DOTs). COTS wireless is an economical, scalable alternative to traditional fiber optics and telephony communications solutions. A virtual Ethernet network is created along a highway right-of-way (ROW) by installing wireless point-to-point links in a serial fashion that can extend upwards of 30 miles per section from a base node. This local area network (LAN) becomes a seamless extension of the DOT´s communications for field devices such as cameras, RWIS, traffic sensors, and field personnel. This paper discusses the design and architecture issues of serial wireless LANs used in a transportation setting based on real world deployments and outdoor testing on Virginia´s Smart Road Transportation test bed. Digital video applications along wireless networks are specifically addressed.