Evaluation data show that anti-icing and pre-wetting strategies can reduce sanding applications by 20 to 30 percent, decrease chemical applications by 10 percent, and reduce chloride and sediment runoff in local waterways.(19 August 2005.)
In Nebraska, a portable speed detection and warning system placed upstream from an I-80 work zone decreased the highest 15 percent of vehicle speeds by about 5 mi/hr as vehicles approached the work zone lane merge area.(May 2000)
In Greenwood, Nebraska a survey of travelers indicated that 29 percent of drivers who remembered DMS messages at a work zone on I-80 thought the alternate route information provided was not useful; 23 percent thought the caution messages were not useful.(May 2000)
In Greenwood, Nebraska a portable traffic management system designed to caution drivers of work zone activity and encourage use of alternative routes during periods of congestion increased traffic diversion by 4 percent.(May 2000)
Studies in six metropolitan areas of the United States and Australia, automated enforcement systems reduced red light violations by 20 to 60 percent, decreased right-angle crashes by 30 percent, and reduced crash injuries by 10 percent.(August 1997)
Nebraska