Samenvatting
The aging highway infrastructure, increased traffic congestion, jeopardized safety, a dwindling highway workforce, the scarcity of high-quality materials, environmental issues, and inadequate fundingdesign and construction professionals view these not as roadblocks but as challenges and are working to provide a highway system acceptable to the traveling public in 2020 and beyond. This article introduces the November/December 2007 issue of TR News, in which the authors explore the design, materials, pavements, structures, construction, and preservation of tomorrow's highway infrastructure.