Labor's promised Metronet rail network needs to be backed up with details of how much it will cost before it can be taken seriously, says WA Transport Minister.
WA Treasurer and Transport Minister Troy Buswell hit back at opposition leader Mark McGowan's announcement on Sunday, casting doubt over whether there would be money for the work to go ahead.
Mr McGowan said Perth would get the new Metronet system, that includes extensions of the existing tracks and new circle lines if Labor wins the next state election.
"Perth is suffering a congestion crisis and our rail system is struggling to cope. Over the past eight years, the number of people boarding Perth trains has doubled,” he said.
"Poor planning by the Barnett Government has resulted in a public transport network that can’t meet the needs of our growing city, making life harder for people living in Perth," Mr McGowan said.
The plans include a new north and south circle routes with new stations to link more Perth suburbs as well as a direct link to the airport.
Labor said they won’t reveal details on how much the project will cost or how long it will take, only that they have so far based costing on previous rail developments including the Mandurah Line, Thornlie spur line and Clarkson line extension which cost an estimated $1.6 billion.
Mr Buswell dismissed the plans without more details.
"If the Labor party want to be taken seriously as an alternate government they need to propose projects that are both deliverable and funded.
"For example recent costings provided to the government by the Perth Transport Authority, the people who build our railways, indicate the rail to the airport alone will cost in excess of $1.6 billion," Mr Buswell said.
"Clearly there is a massive funding black hole associated with this announcement.
"To have any credibility Labor needs to have their promises costed by Treasury, rather than simply making promises they will never be able to fulfil," he said.
Mr McGowan said he will announce more details following WA's mid-year review.