Sunshine Coast Council Mayor Mark Jamieson dismissed claims the council's work on creating a mass transit solution would make matters worse.
He said in her 28 years as the Maroochydore MP Ms Simpson had not delivered a public transport plan for her electorate, or the region.
Mayor Mark Jamieson said Maroochydore MP Fiona Simpson should release her plan for public transport improvements.
"After nearly three decades as an elected member, I don't think it's too much to ask that rather than criticise, she provide us with her plan for a public transport solution - and one that offers more than duplicating the North Coast Rail Line to Nambour," Cr Jamieson said.