Because RWIS data helps the South Dakota DOT call out the right equipment at the right time, the system saves the highway agency money. In addition, supervisors do fewer road condition inspections, saving time and money. To reduce costs, the South Dakota DOT is beginning to evaluate anti-icing strategies. These strategies will incorporate the use of RWIS data to help determine when to apply chemicals to the road to prevent ice from sticking to it. More timely means better safety, less material used, and lower costs.
Timing is the key element and the biggest benefit of the system.