Highway Performance Monitoring System (HPMS) 2020

The Highway Performance Monitoring System (HPMS) 2020 dataset was compiled February 28, 2022 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 file geodatabase download provides HPMS data for each state as an individual feature class. This dataset represents the highway system as of the 2020 calendar year. HPMS provides data that reflects the extent, use, condition, and performance of the public roads in the United States. It consists of the All Road Network of Linear Referenced Data (ARNOLD) geometry and the Section Data which is the attribution. ARNOLD and Sections are linked though linear referencing and are part of the HPMS data program. These data are analytical for the purpose of supporting transportation programs, funding and policy decisions at a national level. Operational applications such as navigation and routing may take advantage of HPMS with the understanding that it represents the average and not “real-time” of the system. The Highway Performance Monitoring System Field Manual contains a detailed description of each data element including coding instructions and attribute definitions. The Field Manual is available at: https://doi.org/10.21949/1519108.本高速公路性能监测系统（Highway Performance Monitoring System, HPMS）2020数据集于2022年2月28日由美国联邦公路管理局（Federal Highway Administration, FHWA）汇编完成，隶属于美国运输部（U.S. Department of Transportation, USDOT）下属运输统计局（Bureau of Transportation Statistics, BTS）的国家交通地图集数据库（National Transportation Atlas Database, NTAD）。本次提供的文件地理数据库下载包，将各州的HPMS数据以独立要素类的形式分别存储。本数据集呈现的是2020日历年的美国公路系统全貌。HPMS涵盖的数据可反映美国公共道路的规模、使用状况、技术状态与运行性能。该数据集包含线性参考数据全道路网（All Road Network of Linear Referenced Data, ARNOLD）几何数据与作为属性数据的路段数据。ARNOLD与路段数据通过线性参考机制关联，同属HPMS数据项目体系。此类数据属于分析型数据集，旨在为国家级交通规划、资金分配与政策制定提供决策支撑。诸如导航、路径规划等业务类应用可基于HPMS数据开发，但需注意该数据集反映的是公路系统的平均运行状态，而非实时动态数据。《高速公路性能监测系统字段手册》（Highway Performance Monitoring System Field Manual）对所有数据元素均有详细说明，涵盖编码规则与属性定义。该手册可通过以下链接获取：https://doi.org/10.21949/1519108。