Instant Messaging on the Highway Departments of Transportation turn to LED message centers to update travelers. 

Highway streaming-text messages may not be entertaining, but they're crucial: "Accident ahead, reduce speed to 20 mph and use alternate Rte. 312 to avoid stalled traffic. "

Many state Departments of Transportation (DOTs) have adopted LED message centers as their preferred highway-traffic management system to inform drivers about current travel conditions. Roadside, LED text messages instantly communicate ongoing, or unsafe, driving conditions and, if necessary, suggest alternate routes.