U.S. Department of Transportation
Federal Highway Administration
1200 New Jersey Avenue, SE
Washington, DC 20590
Figure 3.1 illustrates the structure of the HPMS data model, which consists of six catalogs that are used to figuratively group the 17 datasets that comprise HPMS.
The Shapes catalog is used to group seven geospatial datasets that provide the framework for spatial analysis, and mapping procedures within the HPMS database. The datasets grouped in this catalog are as follows: Census urban area boundaries, State boundaries, county boundaries, climate zone boundaries, soil type boundaries, NAAQS (National Ambient Air Quality Standards) boundaries, and the Routes dataset. The Routes dataset is the national Linear Referencing System (LRS) network, which is comprised of each State's LRS network. For this reason, each State is responsible for developing and providing their LRS network data to FHWA as part of their annual submittal. In addition, the States must provide their adjusted Census Urban Area Boundaries dataset to FHWA each year that adjustments are performed.
The Summaries catalog is used to group five datasets that contain various data attributes for roadways that are functionally classified as rural minor collectors and locals. These datasets are identified as follows: statewide summaries, vehicle summaries, urban summaries, county summaries, and NAAQS summaries. For the purposes of this catalog, the each State must develop and submit all five datasets to FHWA as part of their annual submittal.
The Sections catalog is used to group two datasets that contain a variety of roadway attribute data pertaining to each State's road network. These datasets are identified as the Sections and Sample Panel Identification datasets. For the purposes of this catalog, each State must develop and submit both datasets to FHWA as part of their annual submittal.
The References catalog is used to group the location information for all grade-separated interchanges that are located on the Federal-aid highway system. The dataset that tracks this information is identified as the Point References dataset.
The Estimates catalog is used to group a single dataset that is referred to as the Estimates dataset. This dataset contains estimate data for various pavement-data related items to be used for national-level analysis where measured data is not available. For the purposes of this catalog, each State must develop and submit their Estimates dataset to FHWA as part of their annual submittal.
The Metadata catalog is used to group a single dataset that is referred to as the Metadata. This dataset contains information on the various procedures associated with the collection and assembly of various traffic and pavement data elements, which may impact the accuracy and quality of the data. For the purposes of this catalog, each States must develop and submit their Metadata to FHWA as part of their annual submittal.