The Baillieu government's specially created public transport authority is so far failing in its task to fix and expand public transport in Victoria because it is too politically compromised, the state's leading public transport lobby group says.

Tony Morton, the new president of the Public Transport Users Association, has condemned the performance of Public Transport Victoria, the overarching authority the Baillieu government established to improve transport governance, saying that eight months after its formation it was yet to reveal an agenda.

Dr Morton accused the authority of being secretive about its plans and of failing to demonstrate its independence from government.

"It appears that PTV is just a rebranded version of the failed old bureaucracy, rather than a re-skilled agency with a clear mandate to fix and extend public transport," Dr Morton said.

He said the authority ought to speak out against any politically motivated decisions by government that are detrimental to good transport planning, such as reopening the New Street level crossing in Brighton, when the money could go towards fixing a level crossing that creates far worse traffic problems.