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The freeways crossing mountainous areas in China are playing a major role in economic development. In the past decade, building freeways in these regions have greatly stimulated economic development in all aspects and will also be a major factor in the areas' sustainable development for the future. Due to the geometry of highways, freeway accidents have become a serious problem in these mountainous areas. This paper focused on the modeling of freeway safety with the consideration of geometry, traffic flow, and roadside environment. Particularly, the generalized regression model was developed based on the data collected from the mountainous areas. © 2010 ASCE.
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