Author(s)

X. SUN, Y. HE, L. ZHONG & Y. CHEN

Abstract

This paper presents a study on the development of safety performance function for freeways. Applying well-established statistical methods, we evaluated all variables that may affect freeway safety and selected the most significant ones in the model. A variable analysis unit was utilized in this study to overcome the difficulties in obtaining accurate crash and highway attribute data, as well as to improve the modelling quality. The results of this study provide much needed tools for freeway safety analysis.

Keywords

freeway safety, probability distribution, safety performance model