README for “Federal Aid Primary (FAP - 1991) 2024-Present” dataset. U.S. Department of Transportation (DOT), Federal Highway Administration (FHWA); U.S. Department of Transportation (USDOT), Bureau of Transportation Statistics (BTS) [distributor] 2025-06-09 ---------------------------------------------------------------- LINKS TO DATASET ---------------------------------------------------------------- A. Dataset archive link: https://doi.org/10.21949/1403470 B. NTAD catalog dataset link (Current Year): https://doi.org/10.21949/1530109 ---------------------------------------------------------------- SUMMARY OF DATASET ---------------------------------------------------------------- The Federal Aid Primary (FAP - 1991) 2024-Present dataset is from the Federal Highway Administration (FHWA), and is part of the U.S. Department of Transportation (USDOT)/Bureau of Transportation Statistics’s (BTS's) National Transportation Atlas Database (NTAD). The Federal Aid Primary system came into existence on June 1, 1991. ---------------------------------------------------------------- TABLE OF CONTENTS ---------------------------------------------------------------- A. General Information B. Sharing/Access & Policies Information C. Data and Related File Overview D. Methodological Information E. Data-Specific Information for: Federal Aid Primary (FAP - 1991) 2024-Present [datasets] F. Update Log ---------------------------------------------------------------- A. GENERAL INFORMATION ---------------------------------------------------------------- 0. Title of Dataset: Federal Aid Primary (FAP - 1991) 2024-Present [dataset] 1. Description of Dataset: The Federal Aid Primary (FAP - 1991) 2024-Present dataset is from the Federal Highway Administration (FHWA), and is part of the U.S. Department of Transportation (USDOT)/Bureau of Transportation Statistics’ (BTS's) National Transportation Atlas Database (NTAD). The Federal Aid Primary system came into existence on June 1, 1991. 2. Dataset archive link: https://doi.org/10.21949/1403470 3. Authorship Information: Principal Data Creator or Data Manager Contact Information Institution: U.S. Department of Transportation (DOT), Federal Highway Administration (FHWA) Address: 1200 New Jersey Ave SE, Washington D.C. 20590 Contact: ExecSecretariat.FHWA@dot.gov Data Distributor Contact Information Name: National Transportation Atlas Database (NTAD) Institution: U.S. Department of Transportation (USDOT), Bureau of Transportation Statistics (BTS), Office of Spatial Analysis and Visualization (OSAV) Address: 1200 New Jersey Ave. SE, Washington D.C. 20590 Email: ntad@dot.gov 4. Date of data collection and update interval: This dataset is updated as needed. This dataset is updated as needed. Dataset Manager is contacted to verify changes to data resulting in NTAD update. The metadata is updated in the same manner. For the most recent data, please visit the NTAD catalog at https://doi.org/10.21949/1530109 5. Geographic location of data collection: United States of America 6. Information about funding sources that supported the collection of the data: Federal Highway Administration (FHWA), U.S. Department of Transportation (DOT) ---------------------------------------------------------------- B. SHARING/ACCESS & POLICIES INFORMATION ---------------------------------------------------------------- 0. Recommended citation for the data: U.S. Department of Transportation (DOT), Federal Highway Administration (FHWA), U.S. Department of Transportation, Bureau of Transportation Statistics (BTS) [distributor]. Federal Aid Primary (FAP - 1991) 2024-Present [datasets]. 1. Licenses/restrictions placed on the data: These data are in the Public Domain. 2. Was data derived from another source?: No. 3. This document was created to meet the requirements enumerated in the U.S. Department of Transportation's 'Plan to Increase Public Access to the Results of Federally-Funded Scientific Research' Version 1.1 << https://doi.org/10.21949/1520559 >> and guidelines suggested by the DOT Public Access website << https://doi.org/10.21949/1503647 >>, in effect and current as of December 03, 2020. ---------------------------------------------------------------- C. DATA & RELATED FILE OVERVIEW ---------------------------------------------------------------- 1. File List for the Federal Aid Primary (FAP - 1991) 2024-Present dataset A. Filename: bts_NTAD_FAP_1991_DMP_20250609.pdf Short description: A PDF file containing the Data Management Plan that was created for current and future management of the data and associated files. B. Filename: bts_NTAD_FAP_1991_README_20250609.txt Short description: The README.txt file that includes human-readable information about the data, variable definitions, contact information, and other contextual information. The file you are reading now. C. File List for the Federal_Aid_Primary_1991_NTAD2024_Present.zip collection. Ca. File List for NTADXXXX_GDB_Final_1991_FAP_XXXX_XX_XX.zip collection Ca 1. Filename: NTADXXXX_GDB_Final_FAP_1991_XXXX_XX_XX.gdb.zip (Folder) Short description: Compressed file folders containing the geospatial data for Federal Aid Primary (FAP - 1991) 2024-Present dataset. File folders are classified by NTAD publication year and data vintage year or date respectively. Geodatabase (GDB) folders contain all the necessary components to view and otherwise interact with their data. Ca 2. Filename: 1991_FAP.xml Short description: Extensible Markup Language (XML) files containing key metadata and documentation information such as methodology, procedures, etc. Ca 3. Filename: Federal_Aid_Primary_1991.xlsx Short description: Excel spreadsheet containing the dataset's data dictionary including attribute field names and definitions for fields and applicable values. ---------------------------------------------------------------- D. METHODOLOGICAL INFORMATION ---------------------------------------------------------------- 1. Description of methods used for collection/generation of data: The Federal-aid primary system in existence on June 1, 1991, but may be updated due to changes in roadway alignment 2. Instrument- or software-specific information needed to interpret the data: File geodatabase data can only be opened with Esri ArcGIS. The documentation files can be opened with any basic text editor. ---------------------------------------------------------------- E. DATA-SPECIFIC INFORMATION ---------------------------------------------------------------- 1. Federal Aid Primary (FAP - 1991) data table Due to the size of the data, it is not described in detail here. Review the data dictionary present in the data folders for information on the data table. A. Number of variables (columns): The data dictionary found in Federal_Aid_Primary_1991.xlsx provides definitions for the variables B. Data Dictionary/Variable List: Because of the large number of variables, please refer to the Data Dictionary found within the file Federal_Aid_Primary_1991.xlsx for names, definitions, and formats of variables. C. Missing data codes: None ---------------------------------------------------------------- F. UPDATE LOG ---------------------------------------------------------------- This bts_FAP_1991_20250609_README.txt file was originally created on 2025-05-28 by Dominic Menegus, Geographer, dominic.menegus@dot.gov [Note changes or update to the readme.txt file, e.g.:] 2025-06-09: Original file created 2025-12-09: DOI added