Bundesstraße
One distinguishing characteristic between German "Bundesstraßen" and "Autobahnen" is that there usually is a general 100 km/h (62 mph) speed limit on federal highways out of built-up areas, as opposed to the merely advisory speed limit ("Richtgeschwindigkeit") of 130 km/h (83 mph) in unmarked sections of the autobahns. However, a number of "Bundesstraßen" have been extended as expressways (dual carriageways) (colloquially called "Yellow Autobahns"). Many of these have speed limits of usually 100–120 km/h, others have only an advisory speed limit like autobahns. Most sections of the federal highways are only single carriageway with one lane for each direction and no hard shoulder pull-out area.
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After the National Maximum Speed Limit was repealed, Kansas raised its general interstate speed limit to ; a study found "no statistically significant increases in crash, fatal crash and fatality rates were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.