Postmiles

Postmiles are valid postmile points at 1 (one) mile intervals, based on Office of GIS Linear Referencing System layer (TIGER linework). Exceptions that are included are the beginning and ends of routes (and other situations) that don't necessarily begin or end on the even 1 mile interval.This feature class was clipped to the Trinity County BoundaryPostmile里程桩（Postmile）指以1英里为间隔设置的合规里程点，其数据基于地理信息系统（GIS）办公室的线性参考系统图层（TIGER线要素图层，TIGER linework）。本次数据集纳入的例外情形包括路线的起点、终点及其他相关场景，此类点位未必恰好落在整数1英里的间隔位置上。本要素类已被裁剪至特里尼蒂县（Trinity County）的行政边界范围内。