Qld MP Miller grills her ALP colleagues

Labor MP Jo-Ann Miller has continued to rock her own boat during budget estimates, quizzing her own colleagues about everything from consultancies and infrastructure to urban tree clearing.

The Bundamba MP and former police minister, who made the unusual move of applying to ask questions of her own colleagues, on Wednesday questioned the government's $180 million Significant Regional Infrastructure Projects program.

She asked Deputy Premier Jackie Trad to outline how funding was allocated, whether an independent advisory committee was set up and how decisions on the projects were made.

"Quite a number of proposals were put forward and were tested against the criteria," Ms Trad said

"Every single proposal that was put to me was assessed through the infrastructure cabinet committee, which then made a decision, a recommendation, to cabinet for endorsement."

Ms Trad said she had, in parliament, invited members to put forward ideas from their own communities.

Ms Miller later said she would seek further information about the process because she was "clearly not satisfied with the response".

She attempted to secure more detail from department director general Frankie Carroll.

"Was there any formal flow charting in relation to the decision making process at all, or do I have to RTI it?" Ms Miller said.

Ms Miller also questioned the government's $34.6 million independent Building Queensland body, saying there had been "a lot of rhetoric" about it.

She wanted "a list of consultancies and the dollar value of those consultancies" involved in the group.

Her sights were also set on the cost of Ms Trad's trade missions and how many staff were working on urban-tree clearing.

Ms Miller said some saw it as hypocritical for the government to have tree-clearing legislation for other parts of the state while southeast Queensland was "literally being mowed down by some developers".