The Bureau of Transportation Statistics (BTS) today released its monthly update to National Transportation Statistics (NTS), a guide to historical national-level transportation trends.

Each month, BTS updates NTS with transportation statistics from across the following areas:

• The extent, condition, use, and performance of the physical transportation network and infrastructure;
• Safety information including accidents, crashes, fatalities, and injuries for each transportation mode and for hazardous materials movement;
• Transportation’s impact on the economy, including gross domestic product, employment by industry and occupation, and transportation-related consumer and Government expenditures; and 
• Transportation’s impact on energy use.

This month, the following tables received new data: 

• System Mileage Within the United States (1-1, 1-1M)
• Number of Stations Served by Amtrak and Rail Transit (1-7)
• ADA Lift- or Ramp-Equipped Transit Buses (1-8)
• U.S. Oil and Gas Pipeline Mileage (1-10)
• Number of U.S. Aircraft, Vehicles, Vessels, and Other Conveyances (1-11)
• Condition of U.S. Highway Bridges (1-28)
• Average Age of Urban Transit Vehicles (1-29)
• U.S. Vehicle-Miles (1-35, 1-35M)
• Average Length of Haul, Domestic Freight and Passenger Modes (1-38, 1-38M)
• U.S. Passenger-Miles (1-40, 1-40M)
• Transportation Fatalities by Mode (2-1)
• U.S. Gross Domestic Product (GDP) Attributed to Transportation Functions (billions of chained 2017 dollars) (3-4)
• Transit Industry Electric Power and Primary Energy Consumption and Travel (4-16, 4-16M)
• Energy Intensity of Transit Motor Buses (4-24, 4-24M)
• Estimated U.S. Emissions of Carbon Monoxide (4-45)
• Estimated U.S. Emissions of Nitrogen Oxides (4-46)
• Estimated U.S. Emissions of Volatile Organic Compounds (4-47)
• Estimated U.S. Emissions of Particulate Matter (PM-10) (4-48)
• Estimated U.S. Emissions of Particulate Matter (PM-2.5) (4-49)
• Estimated U.S. Emissions of Sulfur Dioxide (4-50)

NTS is a collection of transportation data first published by BTS in November 1971. NTS has grown to over 200 regularly updated datasets and tables after incorporating materials from other Department of Transportation programs.