NHS

It is intended for use in understanding and managing the National Highway System, which includes roadways crucial to the nation's economy, defense, and mobility. Also, the dataset is being used by the US DOT to reflect the FHWA-approved technical correction for NHS and STRAHNET. The National Highway System (NHS) dataset and its geometries was updated on August 08, 2025 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 was downloaded from BTS on 10/30/2025 and subset to the Thrive Study Region. The National Highway System consists of roadways important to the nation's economy, defense, and mobility. The National Highway System (NHS) includes the following subsystems of roadways: Interstate - The Eisenhower Interstate System of highways, Other Principal Arterials - highways in rural and urban areas which provide access between an arterial and a major port, airport, public transportation facility, or other intermodal transportation facility, Strategic Highway Network (STRAHNET) - a network of highways which are important to the United States' strategic defense policy and which provide defense access, continuity and emergency capabilities for defense purposes, Major Strategic Highway Network Connectors - highways which provide access between major military installations and highways which are part of the Strategic Highway Network, Intermodal Connectors - highways providing access between major intermodal facilities and the other four subsystems making up the National Highway System. A specific highway route may be on more than one subsystem. A data dictionary, or other source of attribute information, is accessible at https://doi.org/10.21949/1529838本数据集旨在用于理解和管理美国国家公路系统（National Highway System, NHS），该系统涵盖对国家经济、国防及交通机动性至关重要的公路路网。 此外，美国交通部（U.S. Department of Transportation, USDOT）正借助该数据集体现联邦公路管理局（Federal Highway Administration, FHWA）批准的针对NHS与战略公路网（Strategic Highway Network, STRAHNET）的技术更正内容。 该国家公路系统数据集及其几何数据由美国联邦公路管理局于2025年8月8日更新，隶属于美国交通部/运输统计局（Bureau of Transportation Statistics, BTS）国家交通地图集数据库（National Transportation Atlas Database, NTAD）。 本数据集于2025年10月30日从运输统计局下载，并裁剪至Thrive研究区域。 国家公路系统由对国家经济、国防及交通机动性至关重要的公路路网构成。 国家公路系统包含以下几类公路子系统： 1. 州际公路：艾森豪威尔州际公路系统； 2. 其他主要干线公路：覆盖城乡区域、用于实现干线公路与主要港口、机场、公共交通设施或其他多式联运交通设施之间通行衔接的公路； 3. 战略公路网（STRAHNET）：服务美国战略国防政策的公路路网，可为国防行动提供通行保障、连续性支持及应急能力； 4. 战略公路网主要连接线：连接主要军事设施与战略公路网所属公路的公路； 5. 多式联运连接线：用于衔接主要多式联运设施与国家公路系统其余四类子系统的公路。 一条特定公路路线可能同时隶属于多个子系统。 可通过https://doi.org/10.21949/1529838获取数据字典或其他属性信息来源。