The Thought of Freeway Traffic Sign
li an ming 1; ye zheng ying 2 (1.the first engineering company of shanxi provincial highway bureau; taiyuan; shanxi 030006; china; 2.datong branch of shanxi provincial highway bureau; datong; shanxi 037006; china)
..............page:50-51
The Situation and Countermeasure of Highway and Bridge
ge jun xiang 1; wang jun bei 2 (1.yangquan branch of shanxi provincial highway bureau; yangquan; shanxi 045000; china; 2.shanxi provincial capital construction engineering quality supervision station of communications; taiyuan; shanxi 030006; china)
..............page:29-31
..............page:46-47,62
..............page:10-11,16
..............page:52-53,59
..............page:34-36,42
..............page:32-33,38