Washington DOT requires that temporary traffic control devices be removed by the contractor in reverse order. Recently, the allowance of the removal of channelizing devices with the flow of traffic … [Read more...] about Removing temporary traffic control devices with the flow of traffic vs. backing the work vehicle behind to remove the devices
Washington
Rules and procedures for Washington State Department of Transportation employees to plan for and obtain work zone traffic control assistance from the Washington State Patrol
An instructional letter establishing rules and procedures for Washington State Department of Transportation (WSDOT) employees to plan for and obtain work zone traffic control assistance from the … [Read more...] about Rules and procedures for Washington State Department of Transportation employees to plan for and obtain work zone traffic control assistance from the Washington State Patrol
Vehicle warning lights
The requirements are included in WSDOT Vehicle and Equipment Warning Light Systems Manual. … [Read more...] about Vehicle warning lights
Prevention of work zone related injuries and fatalities
The Washington DOT Work Zone Safety Task Force is dedicated to the prevention of work zone related injuries and fatalities. Established in August 1993, the task force was created to examine work zone … [Read more...] about Prevention of work zone related injuries and fatalities
Flagger training and certification requirements
From Washington State Department of Transportation Standard Specifications for Road, Bridge, and Municipal Construction: "1-10.3(1)A Flaggers Flaggers shall be posted where shown on traffic control … [Read more...] about Flagger training and certification requirements
Work zone impact thresholds
WSDOT does not use performance specifications. Time of day restrictions or night work is specified based on hourly traffic volumes. Generally WSDOT uses analysis programs such as QUEWZ98 to calculate … [Read more...] about Work zone impact thresholds