USA Banner

Official US Government Icon

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure Site Icon

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

U.S. Department of Transportation U.S. Department of Transportation Icon United States Department of Transportation United States Department of Transportation

References

Tuesday, January 6, 2015

Lincoln, A., “Internal Improvements,” Speech of Mr. A. Lincoln of Illinois in the House of Representatives (Washington, DC: June 28, 1848), Congressional Globe, 30th Congress, 1st Session.

U.S. Department of Transportation (USDOT). Bureau of Transportation Statistics (BTS):

—2014. National Transportation Statistics (October 2014). Available at http://www.bts.gov as of October 2014.

—2013. Transportation Statistics Annual Report. Available at http://www.bts.gov.