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- W2245655403 abstract "The accident surrogate measures developed for hazardous-location identification and countermeasure evaluation at rural isolated horizontal curves are presented. An accident surrogate measure is defined as a quantifiable observation that can be used in place of or as a supplement to accident records. A list of potential accident surrogates was developed from four information sources: literature; a two-day workshop to obtain opinions and observations of highway safety professionals; analysis of an existing data base containing accident, geometric, operational, and environmental data; and selected field data collection at six rural isolated horizontal curves. Comprehensive sets of data were collected at 25 rural isolated curves. The data included measurements of operational and nonoperational characteristics and accidents. Statistical analyses of these data yielded five models for predicting specific types of accident rates. The strongest model developed in the study (R sq = 0.81) indicates that the outside-lane accident rate can be predicted from measurements of the distance from the last traffic event on the outside lane and the speed differential between the approach speed and the curve midpoint speed for traffic in the outside lane. The other models (outside-lane accident rate, run-off-road accident rate, and two models for predicting rear-end accident rate) had R sq -values greater than 0.65. The results indicate that accident surrogates can be developed through a systematic identification and measurement of roadway, driver, and traffic characteristics. (Author)" @default.
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- W2245655403 date "1983-01-01" @default.
- W2245655403 modified "2023-09-28" @default.
- W2245655403 title "SURROGATE MEASURES FOR ACCIDENT EXPERIENCE AT RURAL ISOLATED HORIZONTAL CURVES" @default.
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