Editing Speed limit (section)

===Fuel efficiency===
Fuel efficiency sometimes affects speed limit selection. The United States instituted a [[National Maximum Speed Law]] of {{cvt|55|mph}}, as part of the [[Emergency Highway Energy Conservation Act]], in response to the [[1973 oil crisis]] to reduce fuel consumption.<ref name="usdoj1">{{cite web|url=http://www.usdoj.gov/osg/briefs/1989/sg890328.txt|title=Nevada brief in ''Nevada v. Skinner''|url-status=dead|archive-url=https://web.archive.org/web/20101128193331/http://www.justice.gov/osg/briefs/1989/sg890328.txt|archive-date=2010-11-28}}</ref> According to a report published in 1986 by [[The Heritage Foundation]], a [[Conservatism in the United States|Conservative]] advocacy group, the law was widely disregarded by motorists and hardly reduced consumption at all.<ref name="heritage1">{{cite web|title=The High Cost of the 55 MPH Speed Limit|access-date=2007-04-19|last=Copulos|first=Milton R.|url=http://www.heritage.org/Research/SmartGrowth/bg532.cfm|publisher=[[The Heritage Foundation]]|date=1986-09-09|url-status=unfit|archive-url=https://web.archive.org/web/20070510160215/http://www.heritage.org/Research/SmartGrowth/bg532.cfm|archive-date=2007-05-10}}</ref> In 2009, the [[American Trucking Associations]] called for a {{cvt|65|mph}} speed limit, and also national fuel economy standards, claiming that the lower speed limit was not effective at saving fuel.<ref>{{cite web|url=http://www.ens-newswire.com/ens/jan2009/2009-01-27-093.asp|title=Trucking Industry Asks Congress for National 65 mph Speed Limit|date=2009-01-27|publisher=Environment News Service|access-date=2009-02-08|archive-date=2009-01-31|archive-url=https://web.archive.org/web/20090131051033/http://ens-newswire.com/ens/jan2009/2009-01-27-093.asp|url-status=dead}}</ref>