Greens MP Michael Berkman wants Queensland children to travel on public transport for free as an effort to bust congestion.

Berkman claims “free public transport for every kid in Queensland, from Brisbane to Cairns, would cost just $56 million per year; just for context, the government will spend $2.5 billion this year on roads.

Transport Minister Mark Bailey says the government already subsides public transport across south-east Queensland by more than $1.9 billion a year”.