Wikipedia: "A Bi-articulated bus is an extension of an articulated bus in that it has three cabin sections instead of two. This also involves the addition of an extra axle. Due to the extended length, bi-articulated buses tend to be used on high frequency core routes or bus rapid transit schemes rather than conventional bus routes"
Hamburg: Second largest city of Germany, situated in the north at the river Elbe, because of the seaport well known as a city of merchants. Because of the nearby sea, you will always have some fresh breeze while you are walking through the streets with nice private town-houses or while you are floating along aboard an “Alsterdampfer” on the river Alster.