The Bureau of Transportation Statistics releases non-seasonally adjusted air traffic data based on monthly reports from commercial U.S. air carriers.

Data used in the Bureau of Transportation Statistics' new interactive version of Transportation Economic Trends (TET). TET highlights transportation's role in the economy and explores changes (trends) over time through a series of interactive charts. TET also explains related concepts and data sources for a general audience.

Interactive visualizations available at: https://data.transportation.gov/stories/s/28tb-cpjy

The Federal Highway Administration's National Highway Construction Cost Index (NHCCI) is a quarterly price index intended to measure the average changes in the prices of highway construction costs over time and to convert current-dollar highway construction expenditures to real dollar expenditures.

The U.S. Census Bureau provides monthly estimates of the total dollar value of construction work done in the United States as part of the Value of Construction Put in Place Survey (VIP). Includes commercial parking lots and garages.

Airports with scheduled service and intercity bus and intercity rail (Amtrak/Alaska rail) facilities for years 2006, 2012, and 2018. Used to find rural areas with access to one or more of these transportation modes: https://data.transportation.gov/Research-and-Statistics/Access-to-Intercity-Transportation-in-Rural-Areas/29cj-8s4a .

Interactive map showing access to intercity transportation in rural areas:
https://datahub.transportation.gov/stories/s/Rural-Access-to-Intercity-Transportation/gr9y-9gjq/edit

Methodology:
https://datahub.transportation.gov/stories/s/dbb4-pr2c

Rail carload traffic is comprised of mostly bulk commodities, such as coal and agricultural products. The Association of American Railroads releases data on carloads and intermodal units originated by U.S. railroads on a weekly and monthly basis.

A monthly measure of the volume of services performed by the for-hire transportation sector. The index covers the activities of local mass transit, intercity passenger rail, and passenger air transportation.

Economic concepts related to transportation investment

National Highway Traffic Safety Administration releases data on highway fatalities in the Fatality Analysis Reporting System (FARS). Data for the most recent year are preliminary estimates.

Customer on-time performance is the percentage of customers who arrive at their detraining stations on time. An Acela train is late when it arrives at a station more than 10 minutes after its scheduled time; a Northeast Regional or State-Supported train is late when it arrives more than 15 minutes after its scheduled time. For years before FY 2018, on-time performance is the percentage of total train arrivals on-time at each station, with every arrival weighted equally. Amtrak reports system performance in monthly Host Railroad Reports.