Combining with the facts at Qingxu section along 307 national road,the paper undertakes the reroute design,analyzes the directions for the reroute directions for Qingxu section along 307 national road,compares the two routes,route A and route B,points out%结合国道307清徐段实际情况对其进行了改线设计,分析了国道307清徐段改线路线的走向,并对A,B两种路线方案进行比较,分别阐述其优缺点,最终确定B方案为推荐方案。
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