The South Australian government has unveiled a $36 billion, 30-year integrated transport plan for Adelaide and regional SA.
The plan includes an extensive network of trams across the suburbs, underground train and bus services for the city centre and more outer suburban rail and bus services.
It also proposes to complete the north-south road corridor through the city and a big increase in the number of bike paths.
Premier Jay Weatherill says the plan is the most sophisticated and detailed transport plan ever undertaken in South Australia.
"Over the past decade we have made an enormous investment in our state's transport infrastructure," he said.
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"This plan builds upon this momentum and provides a vision for the future."
The plan also includes duplicating the Dukes Highway to Victoria, sealing a road link in the state's north-east to the Queensland border and other regional road projects.
About 65 per cent of the expenditure will be allocated to Adelaide with 35 per cent to regional areas.
The South Australian opposition said the transport plan was littered with projects Labor had previously announced and scrapped.
Opposition transport spokeswoman Vickie Chapman said that included major road, rail and bus projects across the city.
"Not only has the Weatherill Labor government demonstrated time and time again that it can't be trusted to deliver what it promises, it's also demonstrated time and time again that it can't be trusted to manage our transport system," Ms Chapman said.
