Synthesis of Information Related to Highway Problems. Topic 42-04. Recent Geometric Design Research for Improved Safety, Operations, and Maintenance

There is a significant body of research related to safety and operational impacts of geometric design decisions. Application of this knowledge is sometimes limited because of the sheer volume of information that exists and the rapid pace in which it is produced and published. Geometric design research results are scattered across a variety of different tools and publications that are not easily accessible to highway and street geometric designers and geometric design policy makers. Significant time investments are required to find, critique, and implement the research results into practice. NCHRP Synthesis 299, Recent Geometric Design Research for Improved Safety and Operations was published in 2001 and included a review and summary of selected geometric design research published during the 1990s, particularly research with improved safety and operations implications. The synthesis was organized so that research results were presented with direct correspondence to Green Book chapters (e.g., Design Controls and Criteria, Elements of Design, Cross Section Elements, Intersections, and Interchanges). Since the publication of NCHRP Synthesis 299, a considerable amount of research related to operational and safety effects of highway and street geometrics has been completed. In some cases, the research was executed as part of a strategic research program to develop a specific tool or manual (e.g., 2010 Highway Capacity Manual, Highway Safety Manual, SafetyAnalyst). In other cases, the research was part of individual, unrelated project efforts aimed at addressing an important knowledge gap. Results are published in NCHRP reports and web only documents, FHWA reports, state DOT research reports, and in a number of peer-reviewed transportation journals.


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Filing Info

  • Accession Number: 01463955
  • Record Type: Research project
  • Source Agency: National Cooperative Highway Research Program
  • Contract Numbers: Project 20-05, Topic
  • Files: TRB, RiP, USDOT
  • Created Date: Jan 3 2013 2:33PM