The objective of this project was to develop a new, nonproprietary roadside barrier system capable of meeting NCHRP Report 350 crash test requirements and more cost-effective than the most commonly used strong-post w-beam (SPWB) barrier. Specifically, a new barrier should provide for increased safety, reduced life-cycle costs, lower maintenance needs, and greater installation flexibility. The first phase of the project included a literature review, a survey of state departments of transportation (DOTs), the establishment of basic functional requirements for a new roadside barrier system, and the development of preliminary design concepts and analyses.