Through the introduction of weighted ground line,road surface design elevation is equal to weighted ground elevation so the filling and excavating is balanced and takes the minimal labor.
指出公路线形设计除满足相关设计标准和规范外,还应同时考虑经济、人文等因素,通过引入加权地面线,使路面设计标高与加权地面标高相符合,从而使填挖平衡且保证工程量最小。