Monckebergstrasse transitway in Hamburg, Germany and bi-articulated buses
Lane excuses: Buses deserve dedicated space," Express), on those roads where bus traffic is high, and the ridership carries a significant proportion of the passenger throughput on those streets (such as H Street NW and 16th Street NW especially), it was interesting to see Monckebergstrasse in Downtown Hamburg.
The transitway isn't limited to public buses. Taxis, tourist buses, bicyclists, and pedicabs are also allowed. (Don't know if shared cars have an exception and can use the street, I doubt it.)
It's a block or two from the train station as well as the inter-city bus station and parallel to the pedestrian shopping street, Spitalerstrasse. Cars are permitted overnight, but not during the prime mobility hours.
In the US, buses of this length aren't legal, although tractor trailers with additional trailers are legal on the roads in many states. These combos can be 100 feet long.
Also see the past blog entry, "Making bus service sexy and more equitable," which is about double deck buses as a way to re-brand and reposition traditional bus service.