Comparison of consistency assessment models for isolated horizontal curves in two-lane rural highways
نویسندگان
چکیده
منابع مشابه
Alternative Design Consistency Rating Methods for Two-Lane Rural Highways
Design consistency refers to the conformance of a highway's geometry with driver expectancy. Drivers make fewer errors in the vicinity of geometric features that conform with their expectations. Techniques to evaluate the consistency of a design documented within this report include alignment indices, speed distribution measures, and driver workload. Alignment indices are quantitative measures ...
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Crash Modification Factors (CMFs) are used to represent the effects on crashes of changes to highway design elements and are usually obtained from observational studies based on reported crashes. The design element of interest for this paper is horizontal curvature on rural 2-lane highways. The data for this study came from the Washington State database in the Highway Safety Information System ...
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Transportation Research Record: Journal of the Transportation Research Board, No. 2223, Transportation Research Board of the National Academies, Washington, D.C., 2011, pp. 9–17. DOI: 10.3141/2223-02 Operating speed is most frequently represented by the 85th percentile speed (V85) of vehicles passing at a given road location, in a nonplatoon condition, and it is usually determined by spot speed...
متن کاملTwo-Lane Highways: International Perspective
The results of an extensive literature review of the safety performances of lowand intermediate-traffic-volume, two-lane rural highways are presented. The effects on traffic safety, as measured by accident rates, of pavement width, radius of curve/degree of curve, gradient, sight distance, traffic volume, and design speed on curved sections of two-lane rural highways are covered. The following ...
متن کاملStudying the Effect of Spiral Curves and Intersection Angle on the Accident Rates on Two-Lane Rural Highways in Iran
Safety on highways is one of the most important subjects in Transportation Engineering. The increasing rate of vehicles and the needs to design or geometrically modify the highways has been emphasized in the safe-design of roadways more than before. Between the constructive components of the highway, due to the increasing occurrences of accidents the horizontal curves are of great importance. T...
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ژورنال
عنوان ژورنال: DYNA
سال: 2015
ISSN: 2346-2183,0012-7353
DOI: 10.15446/dyna.v82n194.44476