Enhanced ITS devices may increase the safety of highway facilities. The addition of dynamic message signs to high-speed roadways may increase safety by alerting drivers to unexpected road conditions. Unexpected road conditions may include construction activities, lane closures, crashes, hazardous road conditions, severe weather alerts, and changes in traffic patterns along evacuation routes (i.e., contraflow).

Enhanced ITS devices should also be considered on non-freeway facilities in urban or urban core contexts with a high frequency of special events. Special event management may be necessary for stadiums, convention centers, concert halls, racetracks, marathons, and bicycle races. Special events may draw unusually high volumes of vehicular, bicycle, and pedestrian traffic in a short period of time. Dynamic message signs may be used to facilitate frequent short-term changes in traffic patterns (i.e., contraflow) and allow for the safe and efficient ingress and egress of traffic.