路肩的作用 The role of the shoulder 　　路肩是位于行车道外缘至路基边缘、具有一定宽度的带状结构部分，包括硬路肩和土路肩。路肩的主要作用有： The shoulder is located on the edge of the roadway to the edge of the roadbed, with a certain width of ribbon structures, including hard shoulder and dirt shoulder. The main function of the shoulder is: 　　①保护行车道等主要结构的稳定； The stability of major structures such as the protective lanes; 　　②为发生机械故障或遇到紧急情况的车辆需要临时停车提供位置； To provide temporary parking for vehicles that have mechanical failure or emergency situations; 　　③提供侧向余宽，有利于安全，增加舒适感； It provides lateral width, is conducive to safety, and increases comfort. 　　④可供行人、自行车通行； For pedestrians and bicycles to pass; 　　⑤为设置路上设施提供位置； To provide location for road facilities; 　　⑥作为养护操作的工作场地； The working site of the maintenance operation; 　　⑦在不损坏公路构造的前提下，也可作为埋设地下设施的位置； It can also be used as an underground facility without damaging the construction of the highway. 　　⑧改善挖方路段的弯道视距，增进交通安全； To improve the corners of the excavated section and improve the traffic safety; 　　⑨使雨水能够在远离行车道的位置排放，减少行车道雨水渗透，减少路面损坏。 It allows rainwater to be discharged from the traffic lanes, reducing the amount of rain that travel through the lanes and reducing the road damage.