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
Speed limits on 4-lane divided highways are normally 65 mph although some stretches within cities are posted as low as 50 mph. Open country highways have a statutory limit of 55 mph, which includes most rural two-lane highways and even includes some one lane back country roads or any road without a posted speed limit. Cities and towns set their own speed limits, which are usually between 25 and 55 mph. School zones have a statutory speed limit of 20 mph. Speed limits are commonly reduced by 15 mph in work zones.