在测量规划公路时如因受障碍物的阻挡,无法一次测一条直线,则可运用建立直角坐标系的办法解决。在坐标系内确定公路的起点、方向、中心线位置、弯道的必定点与终点,进行坐标变换,绘出相应的比例图纸,求得公路规划的正确线路。这是一种既简便准确,又具有科学性的方法。一条新公路的形成,应首先进行周密的勘察规划、定位设计和地质地理条件的分析研究工作。在规划过程中着重考虑如何利用在坐标系内进行测量, If a line cannot be measured at a time due to the obstruction of obstacles during the measurement and planning of the road, the method of establishing a rectangular coordinate system can be used. In the coordinate system, the starting point, direction, centerline position of the road, the necessary point and the end point of the curve are determined, coordinate transformation is performed, the corresponding scale drawing is drawn, and the correct route of the road planning is obtained. This is a simple, accurate, and scientific method. The formation of a new highway should be preceded by careful investigation and planning, positioning and design, and analysis and research of geo-geographical conditions. In the planning process, it is important to consider how to use the measurements in the coordinate system.