Greens MP for Melbourne, Adam Bandt, said Labor has shown its true colours after key Labor MPs spoke out in Federal Parliament in favour of the East-West road tollway.

During a debate on Monday, former Attorney-General and Member for Gellibrand in Melbourne's inner west, Nicola Roxon, joined with former Parliamentary Secretary and Member for Corio, Richard Marles, to back the East West tunnel, subject to financing and a ‘proper process'.

Greens Deputy Leader and Federal Member for Melbourne Adam Bandt MP says he will introduce legislation to block Federal funding of the East West tunnel unless the Melbourne Metro is funded first.

The legislation will amend the Infrastructure Australia Act 2008 to require the Commonwealth to prioritise federal funding of rail projects already on the National Priority List, such as the Melbourne Metro, ahead of any new major metropolitan road projects such as the East West tunnel that are not even on the list.

Today's traffic chaos caused by closed road tunnels shows new rail projects are urgently needed in Melbourne, said Adam Bandt, Greens MP for Melbourne.

"Melbourne desperately needs more ways to get into and through the city by rail" said Mr Bandt.

"More road tunnels will just mean more traffic chaos like we've seen today."

 "A lack of public transport often leaves people with no choice but to use their cars to get into and through the city, so a glitch in a road tunnel can cause traffic gridlock across the whole of Melbourne."

Victorian Labor still has plans to build a road tunnel stretching from Kensington to Clifton Hill, Greens MP for Melbourne, Adam Bandt, said today.

Responding to reports that Victorian ALP leader, Daniel Andrews, was now ‘anti-tunnel', Mr Bandt said that the Labor Party still appeared to support the plan it developed while in government for a bigger road tunnel than the one proposed by Premier Ted Baillieu.

"With Labor leaning back towards their original road tunnel plan, Melbourne's parks and liveability are once more under threat" Mr Bandt said.

Greens MP Adam Bandt says he will fight any Federal funding of any East West tollway through inner Melbourne. Reports today suggest industry and the State government is gearing up to proceed with plans for the roadway.

"People in Melbourne do not want a tollway cutting through their communities. Whether it is a tunnel or above ground, the East West link will make Melbourne less liveable and create a rats nest of off-ramps in the inner city", Mr Bandt said.