G'day Agent1337, Thank you for your question. No it isn't. It was the case before 1973 for rural roads. However, the Federal Government set it at 55 mph across the nation. In June 1, 1986, Nevada challenged the 55 mph speed limit by posting a 70 mph limit on a 3 mile (5 km) stretch of Interstate 80. The Nevada statute authorizing this speed limit included language that invalidated itself if the federal government suspended transportation funding. Indeed, the Federal Highway Administration immediately withheld highway funding, so the statute quickly invalidated itself. After speed limits again became a matter for state governments, Nevada set limits for roads with a maximum of 75 mph. Its legislation further provides for driving at a reasonable speed taking into account such things as road condition and the weather. The last jurisdiction without speed limits on some roads was the Northern Territory of Australia but speed limits were introduced this year. I have attached sources for your reference. Regards Wikipedia National Maximum Speed Law http://en.wikipedia.org/wiki/National_Maximum_Speed_Law Nevada Speed Limit Law http://www.usroadconditions.com/nvmileposts.html Nevada DMV http://www.dmvnv.com/pdfforms/qtspeed.pdf Pedestrian Council of Australia http://www.walk.com.au/pedestriancouncil/Page.asp?PageID=1908

No, its not true. the posted speed limit, on the interstate system, is 75 mph.