   300px|right|thumb|a mercedes-benz o305 on the o-bahn guide-way. the adelaide o-bahn busway is a guided busway located in adelaide, south australia. the o-bahn â from the latin omnibus ("for all people") and the german bahn (railway, as in s-bahn and u-bahn) â was conceived by daimler-benz to enable buses to avoid traffic congestion by sharing tram tunnels in the german city of essen. adelaide's o-bahn was introduced in 1986 to service the city's rapidly expanding north-eastern suburbs, replacing an earlier plan for a tramway extension. the adelaide o-bahn was the first bus rapid transit system in australia and among the first to operate in the world. the o-bahn design is unique among public transport systems; busways typically use dedicated bus lanes or separate carriageways, but the o-bahn runs on specially built track, combining elements of both bus and rail systems. adelaide's track is  long and includes three interchanges: klemzig interchange in klemzig, paradise interchange in campbelltown and tea tree plaza interchange in modbury. interchanges allow buses to enter and exit the busway and to continue on suburban routes, avoiding the need for passengers to change. buses travel at a maximum speed of , and the busway is capable of carrying 18,000 passengers an hour, from the central business district to tea tree plaza in 15&nbsp;minutes. services are operated under contract from adelaide metro, an agency of the south australian department for transport, energy and infrastructure. it was planned that bus routes serving the o-bahn would be enhanced from hackney road along grenfell and currie streets and extended to west terrace on the far side of the cbd along dedicated bus lanes. however, the federal government announced in january 2011, as part of its response to the 2010â2011 queensland floods, that the extension would be cancelled "as a result of a significant scope reduction of the original project, resulting in only limited transport benefits".{{cite web|url=http://www.pm.gov.au/sites/default/files/attachment2_rebuilding_floods.doc|title=australian federal government: paying for recovery and restruc
Adelaide_O-Bahn Bus_rapid_transit_in_Australia Busways