Data Catalog

The Federal Transit Administration's National Transit Database (NTD) records the financial, operating and asset condition of transit systems. After data reporting was required by Congress in 1974, the NTD was set up to be the repository of data about the financial, operating and asset conditions of American transit systems. The NTD is designed to support local, state and regional planning efforts and help governments and other decision-makers make multi-year comparisons and perform trend analyses. It contains a wealth of information such as agency funding sources, inventories of vehicles and maintenance facilities, safety event reports, measures of transit service provided and consumed, and data on transit employees. Those receiving funding from the Urbanized Area Formula Program (5307) or Rural Formula Program (5311) – are required to submit data to the NTD in uniform categories. More than 660 transit providers report to the NTD through the Internet-based system.

The Large Truck Crash Causation Study (LTCCS) is based on a 3-year data collection project conducted by the Federal Motor Carrier Safety Administration (FMCSA) and the National Highway Traffic Safety Administration (NHTSA) of the U.S. Department of Transportation (DOT). LTCCS is the first-ever national study to attempt to determine the critical events and associated factors that contribute to serious large truck crashes allowing DOT and others to implement effective countermeasures to reduce the occurrence and severity of these crashes. The LTCCS documents 1,070 major crashes with approximately 1,000 variables on each crash obtained through driver, passenger, and witness interviews; crash scene, truck, and driver inspections, police reports; hospital records; and coroners' reports.

Conducted by the Federal Highway Administration (FHWA), the National Household Travel Survey (NHTS) is the authoritative source on the travel behavior of the American public. It is the only source of national data that allows one to analyze trends in personal and household travel. It includes daily non-commercial travel by all modes, including characteristics of the people traveling, their household, and their vehicles. The NHTS has been conducted in 1983, 1990, 1995, 2001, 2009, and 2017.

Climate Data Online (CDO) provides free access to NCDC's archive of global historical weather and climate data in addition to station history information. These data include quality controlled daily, monthly, seasonal, and yearly measurements of temperature, precipitation, wind, and degree days as well as radar data and 30-year Climate Normals.

Annual bridge inspection data submitted to the FHWA by states, federal agencies, and tribal governments in accordance with the National Bridge Inspection Standards and the Recording and Coding Guide for the Inventory and Appraisal of the Nations Bridges. Additionally, element level bridge condition inspection data submitted annually to the FHWA by states and federal agencies, as required for all bridges on the National Highway System.

A nationwide census providing yearly data on fatal injuries suffered in motor vehicle traffic crashes. FARS data can be used to answer a multitude of questions concerning the safety of vehicles, drivers, traffic situations, roadways, and environmental conditions.