NHS Master Route

This feature class consists of linear data which indicates the National Highway status of a road segment. This can be used to identify inclusion in the National Highway System. This data is owned by the VDOT Transportation and Mobility Planning Division (TMPD). This data is derived from the VDOT Linear Referencing System and is updated nightly based on LRS changes, and updates to the business information. The Linear Referencing System is based on the Virginia Department of Transportation's source system of record for road inventory.本要素类（feature class）包含用于表征各路段国家公路属性的线性数据，可用于识别路段是否纳入国家公路系统。本数据集由弗吉尼亚州交通部（Virginia Department of Transportation, VDOT）交通与出行规划部（Transportation and Mobility Planning Division, TMPD）持有。该数据源自VDOT线性参考系统（Linear Referencing System, LRS），并将每日夜间根据LRS的变更以及业务信息更新完成同步更新。该线性参考系统以弗吉尼亚州交通部的道路库存官方记录系统为基础搭建。