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 France
Minimum or recommended speeds are very rarely marked in France, though vehicles incapable of sustaining 60 km/h are not allowed on highways/motorways and you must be driving at 80 km/h or higher to use the left-most lane of a highway/motorway. Posted speed limits, to conform to the French Highway Code, must be in odd multiples of ten (e.g., 10, 30, 50, etc.), though you can still see 40, 60 and 80 sometimes.