 
 <prompt> Wetin be di name of di road wey, for some time, dey both B3 and B6 for di same stretch? Based on di previous question, write a context wey contain di answer. E fit be 1 - 20 sentences. Context: <response>: The Schnellweg system, wey be some Bundesstraße roads, dey form like big ring road with A2 and A7. The roads na B 3, B 6 and B 65, dem dey call Westschnellweg (B6 for northern part, B3 for southern part), Messeschnellweg (B3, e turn A37 near Burgdorf, cross A2, e turn B3 again, change to B6 for Seelhorster Kreuz, then pass Hanover fairground as B6 and e turn A37 again before e join A7) and Südschnellweg (e start as B65, e turn B3/B6/B65 when e cross Westschnellweg, then e turn B65 again for Seelhorster Kreuz). 