Mark Hurt, D.Eng., P.E., S.E., Senior Squad Leader–Bridge Design, Kansas Department of Transportation, Topeka, Kansas. Dr Hurt is a 20-year plus veteran with the KDOT Bridge Office in design and in maintenance. His role over the last ten years has been as a senior squad leader in design. Mark is licensed as a P.E. in Kansas and as a S.E. in Illinois. Steven D. Schrock, Ph.D., P.E., F.ITE, Associate Professor, Department of Civil, Environmental, and Architectural Engineering, The University of Kansas at Lawrence. Dr Schrock is a registered professional engineer in Kansas. Prior to joining the University of Kansas in 2006 he was an assistant research engineer at the Texas Transportation Institute where he conducted transportation research as a member of the Work Zone and Dynamic Message Sign research program.