Editing Economy of the United States (section)

===Transportation===
====Road====
The U.S. economy is heavily dependent on road transport for moving people and goods. Personal transportation is dominated by automobiles, which operate on a network of four million miles (6.4 million km) of public roads,<ref>{{cite web|title=Public Road and Street Mileage in the United States by Type of Surface|url=http://www.rita.dot.gov/bts/sites/rita.dot.gov.bts/files/publications/national_transportation_statistics/html/table_01_04.html|website=United States Department of Transportation|access-date=January 13, 2015|archive-date=January 2, 2015|archive-url=https://web.archive.org/web/20150102141414/http://www.rita.dot.gov/bts/sites/rita.dot.gov.bts/files/publications/national_transportation_statistics/html/table_01_04.html|url-status=dead}}</ref> including one of the world's [[National Highway System (United States)|longest highway systems]] at 57,000 miles (91,700{{spaces}}km).<ref>{{cite news |url= http://www.newgeography.com/content/002003-china-expressway-system-exceed-us-interstates |title=China Expressway System to Exceed US Interstates |work=New Geography |location =Grand Forks, ND |date=January 22, 2011 |access-date=September 16, 2011}}</ref> The world's second-largest automobile market,<ref>{{cite news |url= https://www.theguardian.com/business/2010/jan/08/china-us-car-sales-overtakes |title=China overtakes US in car sales |newspaper=The Guardian |date=January 8, 2010 |access-date=July 10, 2011 |location=London}}</ref> the United States has the highest rate of per-capita vehicle ownership in the world, with 765 vehicles per 1,000 Americans.<ref>{{cite web |url= http://www.nationmaster.com/graph/tra_mot_veh-transportation-motor-vehicles |title=Motor vehicles statistics – countries compared worldwide |publisher=NationMaster |access-date=July 10, 2011}}</ref> About 40% of [[Passenger vehicles in the United States|personal vehicles]] are vans, [[Sport utility vehicle|SUVs]], or light trucks.<ref>{{cite web|url= http://www.bts.gov/publications/highlights_of_the_2001_national_household_travel_survey/html/section_01.html|title= Household, Individual, and Vehicle Characteristics|publisher= U.S. Dept. of Transportation, Bureau of Transportation Statistics|work= 2001 National Household Travel Survey|access-date= August 15, 2007|archive-url= https://web.archive.org/web/20070929125403/http://www.bts.gov/publications/highlights_of_the_2001_national_household_travel_survey/html/section_01.html |archive-date=September 29, 2007|url-status= dead|df= mdy-all}}</ref>

====Rail====
[[Mass transit in the United States|Mass transit accounts for 9% of total U.S. work trips]].<ref>{{cite web |url= http://www.policy.rutgers.edu/vtc/documents/TOD.Euro-Style_Planning-Renne-Wells.pdf |archive-url=https://web.archive.org/web/20140924071956/http://www.policy.rutgers.edu/vtc/documents/TOD.Euro-Style_Planning-Renne-Wells.pdf |author1=Renne, John L. |author2=Wells, Jan S. |title= Emerging European-Style Planning in the United States: Transit-Oriented Development |page=2 |year=2003 |publisher = Rutgers University |access-date=June 11, 2007|archive-date=September 24, 2014}}</ref><ref>{{cite web|url=http://switchboard.nrdc.org/blogs/kbenfield/natgeo_surveys_countries_trans.html|title=NatGeo surveys countries' transit use: guess who comes in last|last=Benfield|first=Kaid|publisher=Natural Resources Defense Council|date=May 18, 2009|access-date=January 6, 2015|url-status=dead|archive-url=https://web.archive.org/web/20150120234533/http://switchboard.nrdc.org/blogs/kbenfield/natgeo_surveys_countries_trans.html|archive-date=January 20, 2015}}</ref> [[Rail transportation in the United States|Transport of goods by rail]] is extensive, though relatively low numbers of passengers (approximately 31 million annually) use intercity rail to travel, partially due to the low population density throughout much of the nation.<ref>{{cite web |url=http://www.gao.gov/products/GAO-07-15 |title= Intercity Passenger Rail: National Policy and Strategies Needed to Maximize Public Benefits from Federal Expenditures |date=November 13, 2006 |publisher=U.S. Government Accountability Office |access-date=June 20, 2007}}</ref><ref>{{cite news |url=https://www.economist.com/blogs/economist-explains/2013/08/economist-explains-18 |title=The Economist Explains: Why Americans Don't Ride Trains |date=August 29, 2013 |newspaper=[[The Economist]] |access-date=May 12, 2015}}</ref> However, ridership on [[Amtrak]], the national intercity passenger rail system, grew by almost 37% between 2000 and 2010.<ref>{{cite web|title=Amtrak Ridership Records |url= http://www.amtrak.com/servlet/BlobServer?blobcol=urldata&blobtable=MungoBlobs&blobkey=id&blobwhere=1249227805921&blobheader=application%2Fpdf&blobhead |publisher=Amtrak |date=June 8, 2011|access-date=February 29, 2012}}</ref> Also, [[Light rail in the United States|light rail development]] has increased in recent years.<ref>{{cite news |url= http://www.metaefficient.com/trains/master-2.html |title=3 Reasons Light Rail Is an Efficient Transportation Option for U.S. Cities |author=McGill, Tracy |work= MetaEfficient |date=January 1, 2011 |access-date=June 14, 2013}}</ref> The state of [[California]] is currently constructing the nation's first [[California High-Speed Rail|high-speed rail system]].

====Airline====
The [[List of airlines of the United States|civil airline industry]] is entirely privately owned and has been largely [[Airline Deregulation Act|deregulated since 1978]], while [[List of airports in the United States|most major airports]] are publicly owned.<ref>{{cite web|title=Privatization|url=http://www.downsizinggovernment.org/privatization|website=downsizinggovernment.org|publisher=Cato Institute|access-date=December 27, 2014}}</ref> The three largest airlines in the world by passengers carried are U.S.-based; [[American Airlines]] is number one after its 2013 acquisition by U.S. [[US Airways|Airways]].<ref>{{cite web|url= http://www.iata.org/publications/pages/wats-passenger-carried.aspx|title= Scheduled Passengers Carried|publisher= International Air Transport Association (IATA)|year= 2011|access-date= February 17, 2012|url-status= dead|archive-url= https://web.archive.org/web/20131113175503/http://www.iata.org/publications/pages/wats-passenger-carried.aspx|archive-date= November 13, 2013 }}</ref> Of the world's thirty busiest passenger airports, twelve are in the United States, including the busiest, [[Hartsfield–Jackson Atlanta International Airport]].<ref>{{cite web |url =http://www.aci.aero/News/Releases/Most-Recent/2014/03/31/Preliminary-World-Airport-Traffic-and-Rankings-2013--High-Growth-Dubai-Moves-Up-to-7th-Busiest-Airport- |title =Preliminary World Airport Traffic and Rankings 2013 – High Growth Dubai Moves Up to 7th Busiest Airport – March 31, 2014 |publisher=Airports Council International |archive-url=https://web.archive.org/web/20140401052319/http://www.aci.aero/News/Releases/Most-Recent/2014/03/31/Preliminary-World-Airport-Traffic-and-Rankings-2013--High-Growth-Dubai-Moves-Up-to-7th-Busiest-Airport- |archive-date=April 1, 2014 |date=March 31, 2014 |access-date=May 17, 2014 |url-status= live}}</ref>