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
In Oklahoma, the maximum posted speed limit is 75 miles per hour on turnpikes and 70 mph on all other freeways. Most other rural highways, divided or undivided, have a 65 mph speed limit (although some rural divided highways have a 70 mph limit). The minimum speed limit on almost all Interstate Highways, freeways, and turnpikes is 40 mph, except when the speed limit is 75 mph (found only on turnpikes), in which case the minimum speed is 50 mph. In addition, rural sections of turnpike are supplemented with a sign warning "no tolerance". On May 9, 2016, Governor Fallin signed HB 3167 which removes numerical caps on rural highway speed limits in Oklahoma which took effect in November 2016. Even with this bill the speed limits across the state are not expected to change because of budget issues in doing studies