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:

• Number of U.S. Aircraft, Vehicles, Vessels, and Other Conveyances (1-11)
• Active U.S. Air Carrier and General Aviation Fleet by Type of Aircraft (1-13)
• Number and Size of the U.S. Flag Merchant Fleet and Its Share of the World Fleet (1-24)
• Average Age of Automobiles and Trucks in Operation in the United States (1-26)
• Condition of U.S. Highway Bridges (1-28)
• Top U.S. Foreign Trade Freight Gateways by Value of Shipments (1-51) 
• Recreational Boating Safety, Alcohol Involvement, and Property Damage Data (2-47)
• U.S. Gross Domestic Product (GDP) Attributed to Transportation Functions (billions of chained 2017 dollars) (3-4)
• Employment in For-Hire Transportation and Selected Transportation-Related Industries (3-23)
• 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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