National Highway Planning Network

The National Highway Planning Network (NHPN) dataset was compiled on May 01, 2014 from the Federal Highway Administration (FHWA) and is part of the U.S. Department of Transportation (USDOT)/Bureau of Transportation Statistics (BTS) National Transportation Atlas Database (NTAD). This dataset is a comprehensive network database of the nation's major highway system. It consists of the nation's highways comprised of Rural Arterials, Urban Principal Arterials and all National Highway System routes. The data set covers the 48 contiguous States plus the District of Columbia, Alaska, Hawaii, and Puerto Rico. The nominal scale of the data set is 1:100,000 with a maximal positional error of 80 meters. A data dictionary, or other source of attribute information, is accessible at https://doi.org/10.21949/1529044国家公路规划网（National Highway Planning Network, NHPN）数据集于2014年5月1日由美国联邦公路管理局（Federal Highway Administration, FHWA）编制，隶属于美国运输部（U.S. Department of Transportation, USDOT）与运输统计局（Bureau of Transportation Statistics, BTS）共同维护的国家交通地图集数据库（National Transportation Atlas Database, NTAD）。本数据集为美国主要公路系统的综合性网络数据库，涵盖美国乡村干线公路（Rural Arterials）、城市主要干线公路（Urban Principal Arterials）以及全部国家公路系统（National Highway System）线路。数据集覆盖美国本土48州、哥伦比亚特区、阿拉斯加州、夏威夷州及波多黎各。该数据集的标称比例尺为1:100000，最大位置误差为80米。可通过https://doi.org/10.21949/1529044获取数据字典或其他属性信息源。