Abstract

Info

Author(s):: WEI Xin-xin; CHEN Hua-xin; XIA Hui-yun; (School of Materials Science and Engineering, Chang’an University, Xi’an 710061, Shaanxi, China)

Keywords:: road engineering; mountain highway; crash rate; crash prediction; OGFC pavement; precipitation

Abstract:: In order to study the traffic study of OGFC pavement under adverse weather, this paper chose a road segment of OGFC as research subject, compared its traffic crash rate with that of common asphalt pavement according to local meteorological data, and analyzed the effect of different pavement materials on traffic safety under different precipitation. Based on this, the prediction model of the studied road segment based on precipitation of common asphalt pavement and OGFC pavement was developed. The results show that OGFC pavements can decrease more than 74% of crash rate when precipitation is below 10 mm. At the same time, OGFC pavements can reduce more than 50% crashes compared to common asphalt pavement when the precipitation is between 10-24.9 mm. It is also observed that OGFC pavements have less than 85% crashes compared with common asphalt pavement when precipitation is above 50mm. In term with crash type, OGFC pavement can decrease more than 50%, 40%, 30% of the no-collision crashes, rear-end and side swipe collisions, respectively.