All, Both nationally and in the State of Washington, 22 percent of fatalities occurring in highway work zones from 2002 to 2009 involved freight trucks. The average percentage of trucks in Washington State highways is 5-6 percent so heavy trucks are over represented in work zone fatalities. WSDOT and agencies are looking to perform root cause analysis of the problem to focus potential solutions on elements that most significantly contribute to the problem. I am interested in obtaining information related to this research and would appreciate any work being done or completed. Are other states doing analysis in this area? Are other states interested in this problem? Thank you, Dale A Tabat Truck Freight Program and Policy Manager Washington State DOT [log in to unmask]