ANALYSIS AND EVALUATION OF INTERRELATIONSHIPS BETWEEN TRAFFIC SAFETY AND HIGHWAY GEOMETRIC DESIGN ON TWO-LANE RURAL ROADS
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The aim of this paper is to provide a comprehensive presentation about the interrelationships between highway geometric design and traffic safety. To do this four design and accident databases were analyzed and evaluated. Important objectives of this paper are: (1) Analysis of the relationships between individual design parameters and relative accident numbers (As important parameters the influence of pavement width, radius of curve, curvature change rate of the single curve, grade and average annual daily traffic were examined with respect to accident rates and accident cost rates. Furthermore, the influence of different element sequences on the accident situation was investigated. Finally, the results are compared with experiences of the 1970s and 1980s and are at least partially differentiated for different daylight and road surface conditions.); (2) Application of multiple regression analysis, including all design and traffic volume related parameters, to decide which specific parameters have the strongest influence on the accident situation; and (3) Establishment of a classification system for evaluating good, fair, and poor design practices, based on accident research.