Percentage of flights arriving on-time. A flight is on-time if it arrives within 15 minutes of the schedule arrival time. Data are available for those carriers that had at least 1% of domestic enplanements in the previous year. The last 25 months of data include only carriers that reported in each of the last 25 months to retain comparability. Earlier data includes all reporting carriers. A scheduled operation consists of any nonstop segment of a flight. The Bureau of Transportation Statistics air collects performance data from U.S. air carriers and international carriers operating within the U.S.

An estimate of tonnage transported on navigational channels of the United States. Estimates for the most recent month are based on lock performance management data and will be superseded by actual data as it becomes available. The Waterborne Commerce Statistics Center estimates tonnage based on tonnage reported through the lock performance monitoring system.

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

Gross domestic product is the market value of goods and services produced by labor and property in the United States. The U.S. Bureau of Economic Analysis estimates GDP for each quarter and releases new statistics every month. Quarterly GDP data are seasonally adjusted at annual rates.

Personal spending on motor vehicles and parts includes spending on new motor vehicles, used vehicle purchases, and vehicle parts and accessories. The Bureau of Economic Analysis estimates personal consumption expenditures, the primary measure of consumer spending on goods and services in the U.S. economy, for each quarter and releases new statistics every month. Quarterly PCE data are seasonally adjusted at annual rates to remove the effects of normal seasonal variation.

Freight and mail carried by U.S. airlines in all service classes (schedule and nonscheduled) on international flights. A revenue ton-mile is the movement of one ton of revenue cargo carried for one mile. The Bureau of Transportation Statistics air traffic data from U.S. air carriers and international carriers operating within the U.S.

Employed persons include people aged 16 years and older in the civilian noninstitutional population who did any work at all as paid employees; worked in their own business, profession, or on their own farm, or worked 15 hours or more as unpaid workers in an enterprise operated by a member of the family; and all those who were not working but who had jobs or businesses from which they were temporarily absent. The Bureau of Labor Statistics produces industry estimates of nonfarm payroll employment as part of the Current Population Survey.

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.

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.

This dataset contains monthly performance statistics for the Great Lakes-St. Lawrence Seaway system.