道路交叉口层级图

提示词

依据道路和标高资料区分平交、跨线与下穿，交叉点按真实层级表达，投影相交不自动增加路口或转向关系。

Use road and elevation information to distinguish at-grade junctions, overpasses, and underpasses, preserving actual levels rather than adding a junction or turn wherever projected lines cross.