01589927

Component

The safety research in terms of modeling has contributed to reduce the accident frequency by analyzing the relationship between traffic accidents and geometric variables. However, there was a lack of considering the various specifications of geometrics which are not homogeneously constructed in reality and this could be misleading the derived results. That is, in the case of geometry, although recommended values based on guidelines are present, in conventional accident modeling, as the geometry data were used in the form of an integrated ones, there are disadvantages that derived model could not describe the reality correctly on which a mixture of geometries installed. Therefore, in this study, to develop the existing contemporary safety modeling using negative binomial method, two models were derived named as HGSM(Heterogeneous Geometric Slopes Model) and FGSM(Fixed Geometric Slopes Model) and by comparison, some paramount information which was difficult to reveal out in classic negative binomial could be found that will be helpful for the future road policy with respect to safety and economic.

This paper was sponsored by TRB committee ANB20 Standing Committee on Safety Data, Analysis and Evaluation.

01584066

16-2454

English

14p

2016

Transportation Research Board 95th Annual Meeting

Web

References (14) ; Tables

Crash characteristics; Crash rates; Geometric segments; Highway curves; Interstate highways; Mathematical models

Highways; Safety and Human Factors; I82: Accidents and Transport Infrastructure

Transportation Research Board Annual Meeting 2016 Paper #16-2454

TRIS, TRB, ATRI

Jan 12 2016 5:05PM