The national coordinated program (ncp) of highway research, development, and technology (rd&t) of the federal highway administration, has identified areas needing major research effort called high priority national program areas (hpna). The objective of each hpna is to develop a well-defined and useable end product within approximately 3-5 years. currently 15 hpnas are in progress in the following areas: safety, traffic operations, pavements, and structures. Six of the hpnas are in the area of highway safety and cover the following advance testing methods and analysis procedures; information resources; traffic barrier systems; truck highway safety; visibility of traffic control devices; and work zone traffic control. Studies in each of these areas are briefly discussed.
Abstract