METHODS FOR EVALUATING HIGHWAY SAFETY IMPROVEMENTS
In an effort to provide guidelines in collecting data, selecting analysis methods, making calculations and to insure that the information generated is responsive to the demands of desision making and the establishment of priorities on future capital improvements, a survey was made, literature was searched and a field tested users' manual was developed for evaluating highway safety programs. The six-step process contains 2 evaluation steps: pre-implementation evaluation to assure that a proposed improvement has a high likelihood of producing economic benefits through accident cost-reduction, and post- implementation evaluation to compare actual versus predicted effectiveness and provide a basis for forecasting benefits of future improvements. Several techniques for identifying the nature and cause of the accident problem are suggested. Current practices in evaluating alternative improvements (assessment of accident costs, improvement costs and the degree of accident reduction associated with different choices) are detailed, and a recommended procedure is set up. The evaluation step provides a list of safety improvements for programming within the constraints of funding and in coordination with related agency programs. The related significant issues are fully addressed. The final 2 steps are evaluating implemented improvements and evaluating the highway safety program. The 6-step process for highway safety program development and evaluation may be summarized thus: identifying hazardous locations, selecting alternative improvements, evaluating alternative improvements, programming and implementing improvements, evaluating implemented improvements, evaluating the highway safety program.
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Washington, DC United States 20001
- Publication Date: 1975-4
- Media Type: Digital/other
- Features: Figures;
- Pagination: 3 p.
- NCHRP Research Results Digest
- Issue Number: 70
- Publisher: Transportation Research Board
Open Access (libre)
- TRT Terms: Calculation; Computer programming; Data analysis; Decision making; Economics; Evaluation; Field tests; High risk locations; Highway safety; Highways; Implementation; Improvements; Manuals; Mathematical analysis; Policy; Research; Reviews
- Uncontrolled Terms: Computation; Programming
- Old TRIS Terms: Dam crests; Future policies; Substitutes
- Subject Areas: Economics; Highways; Policy; Research; Safety and Human Factors;
- Accession Number: 00097158
- Record Type: Publication
- Files: TRIS, TRB
- Created Date: Sep 10 1975 12:00AM