Title: Correlation of Design Characteristics and Operational Controls with Accident Rates on Urban Arterials
Abstract: The purpose of this research was to evaluate the design characteristics and operational controls which affect the traffic accident rates on an urban arterial street where full control of access is not practical.To attain this objective, the design characteristics and operational controls on one-hundred segments of the arterial street system in the State of Indiana were analyzed in detail to determine their relationships to urban traffic accidents.Accident data on these one-hundred sections were collected for the period starting January 1, 1963, and ending December 31, 1965.The data were analyzed by a simple correlation coefficient analysis, a multiple linear regression technique, and a case study approach.Two different types of accident rates, the number of accidents per 100 million vehicle miles and the number of accidents per mile, were computed and compared.This study found that traffic accidents on an urban arterial decreased as the volume on the arterial decreased, \D VD O^rH in CO U) 00 CTi VD n (Ti r~-o (T>