Autobahns of Austria
Unlike German autobahns, on Austrian autobahns a general speed limit of 130 km/h (81 mph) is set, although as of August 25, 2018, the FPÖ government has been going on a trial for a possible speed limit increase to 140 km/h (87 mph) on the Autobahn 1 freeway. They may only be used by powered vehicles that are designed to achieve at least . While on the motorway voluntary stops, U-turns and backward driving are prohibited.
Speed limits in the United States by jurisdiction
After the National Maximum Speed Limit was repealed, Kansas raised its general interstate speed limit to ; a study found "no statistically significant increases in crash, fatal crash and fatality rates were noted during the after period on either rural or urban interstate highway networks. On the other hand, statistically significant increases in crash, fatal crash and fatality rates were observed on the 2-lane rural highway network.". In 2011 Governor Sam Brownback signed legislation raising Kansas' top speed limit to on Rural Interstates and limited access portions of U.S. Routes, effective July 1, 2011. The Kansas Department of Transportation announced on June 21, 2011, that 807 miles of roadway, comprising the rural areas of I-70, I-35, I-135, the Kansas Turnpike and the freeway-improved sections of US-69 and US-81, will be raised to 75 mph. Other four-lane, non-limited access divided highways have a speed limit of 70 mph, with 65 mph on two-lane undivided roads, and 55 mph on township roads. Prior to the National Maximum Speed Limit, the speed limit on the Kansas Turnpike used to be , but was reduced to 75 mph on August 17, 1970. The minimum speed limit on Kansas Interstates is 40 mph.