Robo flaggers are portable flagging devices with a crossing arm that drops down to block traffic when the lane is closed. When you encounter a robo flagger in a work zone, the same rules apply as when … [Read more...] about Robo Flagger Rules of the Road
Washington State Department of Transportation
Maintenance Manual
This manual provides basic direction to operating personnel for performing maintenance activities on the Idaho state highway system. It includes the following sections: General; Safety; Roadway; … [Read more...] about Maintenance Manual
Utilities Manual
The Utilities Manual outlines the general practices, policies, and procedures in the design, administration, and coordination of utilities and railroad facilities within Washington State Department of … [Read more...] about Utilities Manual
Quantifying Incident-Induced Travel Delays on Freeways Using Traffic Sensor Data: Phase II
Traffic incidents cause approximately 50 percent of freeway congestion in metropolitan areas, resulting in extra travel time and fuel cost. Quantifying incident-induced delay (IID) will help people … [Read more...] about Quantifying Incident-Induced Travel Delays on Freeways Using Traffic Sensor Data: Phase II
Groups Working to Get Traffic Moving After Collisions
The Washington State Patrol, Washington State Department of Transportation, and Washington Fire Chiefs recently signed a Joint Operations Policy Statement (JOPS) to ensure the public of more efficient … [Read more...] about Groups Working to Get Traffic Moving After Collisions
Work Zone Traffic Control Guidelines for Maintenance Operations
While this manual provides interpretive guidance, it does not change the intent of Part 6 of the Manual on Uniform Traffic Control Devices (MUTCD). This manual is a supplement to the MUTCD and applies … [Read more...] about Work Zone Traffic Control Guidelines for Maintenance Operations