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 products, 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 U.S. Aircraft, Vehicles, Vessels, and Other Conveyances (1-11)
• Production, Production Shares, and Production-Weighted Fuel Economies of New Domestic and Imported Light Trucks (1-21)
• Class I Railroad Locomotive Fleet by Year Built (1-32) 
• Age and Availability of Amtrak Locomotive and Car Fleets (1-33)
• Amtrak On-Time Performance Trends and Hours of Delay by Cause (1-73)
• Injured Persons by Transportation Mode (2-2)
• Transportation Accidents by Mode (2-3)
• U.S. Air Carrier Safety Data (2-9)
• U.S. Commuter Air Carrier Safety Data (2-10)
• U.S. Air Carrier Fatal Accidents by Defining Event of Operation (2-11)
• U.S. Commuter Air Carrier Fatal Accidents by Defining Event of Operation (2-12)
• U.S. On-Demand Air Taxi Safety Data (2-13)
• U.S. General Aviation Safety Data (2-14)
• Occupant Fatalities by Vehicle Type and Nonoccupant Fatalities (2-19)
• Occupant and Non-Motorist Fatalities in Crashes by Number of Vehicles and Alcohol Involvement (2-20)
• Passenger Car Occupant Safety Data (2-21a)
• Motorcycle Occupant Safety Data (2-22)
• Truck Occupant Safety Data (2-23)
• Bus Occupant Safety Data (2-24)
• Cash Balances of the Transportation-Related Federal Trust Funds, Fiscal Year (millions of dollars) (3-34)
• Class I Rail Freight Fuel Consumption and Travel (4-17, 4-17M)
• Amtrak Fuel Consumption and Travel (4-18, 4-18M)
• Energy Intensity of Certificated Air Carriers, All Services (4-21, 4-21M)
• Energy Intensity of Class I Railroad Freight Service (4-25, 4-25M)
• Energy Intensity of Amtrak Services (4-26)
• Energy Intensity of Amtrak Services (loss-adjusted conversion factors) (4-27)

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.

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