The plan went as far as the State Government of the day purchasing land along Adelaide's major roads, in preparation for highway construction.
The focus of Adelaide's public transport system is the large fleet of diesel and natural gas powered buses.
Buses get priority on many roads and intersections, with dedicated bus lanes and 'B'-light bus-only phases at many traffic lights.
The Adelaide O-Bahn was constructed in 1986 in response, after beating competing proposals of expanded rail and road networks.
The main terminus for intra and interstate coach-liners is the Adelaide Central bus station on the corner of Franklin and Bowen Streets in the city-centre.
It uses 100% solar power, is equipped with a regenerative braking system and air conditioning and can carry up to 40 persons,[9] 25 of whom are seated.
[15] Adelaide is also the midpoint of the long distance Indian Pacific service between Perth and Sydney, as well as the terminus of The Overland to Melbourne and The Ghan to Alice Springs and Darwin.
In 1968, a rapid transit metro system was proposed in Adelaide underneath King William Street along with a series of freeways, however it was scrapped due to public protest about the "Americanisation" of the city.
[17] This saw a A$56 million upgrade of the Adelaide's sole remaining tramway, from the city centre to the historic beachside resort of Glenelg.
[18] Construction of a new junction, branch lines along the eastern end of North Terrace and King William Road and four new stops began in July/August 2017 and opened on 13 October 2018.
It was officially opened in a ceremony in October 2005 by Governor Marjorie Jackson-Nelson, Premier Mike Rann and Prime Minister John Howard.
The average amount of time people spend commuting with public transit in Adelaide, for example to and from work, on a weekday is 65 min.