U.S Department of Transportation
Tunnels by NHS and State
This summary tables provides annual counts of tunnels on and off the National Highway System (NHS) by States and territories beginning in 2018.
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Updated Oct 25, 2026
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U.S Department of Transportation
This summary tables provides annual counts of tunnels on and off the National Highway System (NHS) by States and territories beginning in 2018.
Updated Oct 25, 2026
U.S Department of Transportation
Motor Vehicle Registration Data by Energy Source :2016 -Present Vehicle types are compatible with FHWA Highway Statistics VM-1 "Total" counts of vehicles for a year are compatible with FHWA Highway Statistics MV-1 minus…
Updated Oct 25, 2026
U.S Department of Transportation
Manufacturers who determine that a product or piece of original equipment either has a safety defect or is not in compliance with Federal safety standards are required to notify the National Highway Traffic Safety…
Updated Oct 25, 2026
U.S Department of Transportation
Data collected for a Volpe/FHWA study at three locations.
Updated Oct 25, 2026
U.S Department of Transportation
The Large Truck* Crash Causation Study (LTCCS) is based on a three-year data collection project conducted by the Federal Motor Carrier Safety Administration (FMCSA) and the National Highway Traffic Safety Administration…
Updated Oct 25, 2026
U.S Department of Transportation
STATE DATA REPORTING SYSTEMS. Annual reports on the Fatality Analysis Reporting System (FARS) which is data regarding fatalities that is collected by a FARS analyst from each State and provided to NHTSA.
Updated Oct 25, 2026
U.S Department of Transportation
The NHTSA Vehicle Crash Test Database contains engineering data measured during various types of research, the New Car Assessment Program (NCAP), and compliance crash tests. Information in this database refers to the…
Updated Oct 25, 2026
U.S Department of Transportation
Contains NHTSA record schedules. SYSTEMS INTEGRATION (NPO-430). Redirects to NARA archives website for records schedules by Department and Agency.
Updated Oct 25, 2026
U.S Department of Transportation
The NHTSA Biomechanics Test Database is a repository of experimental data used by NHTSA for developing Anthropomophic Test Devices and associated Injury Criteria. The data is disseminated via this website for use by…
Updated Oct 25, 2026
U.S Department of Transportation
State DOTs provide the Highway Performance Monitoring System (HPMS) with the location limits of highway sections used to represent statewide aggregations based on a statistically valid Sample Panel.
Updated Oct 25, 2026
U.S Department of Transportation
The Not-in-Traffic Surveillance (NiTS) system is a virtual data collection system designed to provide counts and details regarding fatalities and injuries that occur in non-traffic crashes and in non-crash incidents.…
Updated Oct 25, 2026
U.S Department of Transportation
NOTE: As weblinks are updated continually by transit agencies, some links submitted in Report Year 2023 may no longer work. The most up-to-date weblinks dataset is refreshed on a monthly basis:…
Updated Oct 25, 2026
U.S Department of Transportation
This dataset details places and counties served by Demand Response (DR) modes for each applicable agency and type of service (TOS) reported to the National Transit Database for the 2024 report year. NTD Data Tables…
Updated Oct 25, 2026
U.S Department of Transportation
A list of Significant Guidance documents, which include guidance document disseminated to regulated entities or the general public that may reasonably be anticipated to lead to an annual effect on the economy of $100…
Updated Oct 25, 2026
U.S Department of Transportation
RMS is a DOT-wide system developed for the Office of the General Counsel (OGC) to track the status of rulemakings, document required concurrences, serve as a repository for documents under development, and generate…
Updated Oct 25, 2026
U.S Department of Transportation
Data Quality identifies FMCSA resources for evaluating, monitoring, and improving the quality of data submitted by States to the Motor Carrier Management Information System (MCMIS).
Updated Oct 25, 2026
U.S Department of Transportation
NCAP rates vehicles to determine crash worthiness and rollover safety. The safety ratings are gathered during controlled crash and rollover tests conducted at NHTSA research facilities. Vehicles with a rating of five…
Updated Oct 25, 2026
U.S Department of Transportation
The Chart Supplements are searchable by individual airport in PDF format. They contain data on public and joint use airports, seaplane bases, heliports, VFR airport sketches, NAVAIDs, communications data, weather data,…
Updated Oct 25, 2026
U.S Department of Transportation
Summary monthly traffic volume trends from the monthly FHWA publication Traffic Volume Trends (TVT) Report.
Updated Oct 25, 2026
U.S Department of Transportation
The entire National Highway-Rail Crossing Inventory is available in three separate downloadble files. There is a file of all current Public-at-Grade crossings. There is a file of all current Private and grade-separated…
Updated Oct 25, 2026