A Liberal National Party petition to name a new Brisbane rail line in honour of the late Queen has been downplayed by the state government, which says it is a data harvesting scheme.
Deputy Opposition Leader Jarrod Bleijie set up the petition calling for the 10.2 kilometre Cross River Rail line, which will run through the CBD, to be named the Elizabeth Line.
He said renaming the $5.4 billion project - following the example of the London Underground's newest line - would be a fitting tribute to Elizabeth II's seven-decade reign.
"Having this as the Elizabeth line ... would be a fantastic milestone and recognition of the service of Her Majesty the Queen," Mr Bleijie told reporters on Wednesday.
"(It's) great to see leaders around the Commonwealth looking at what they can do to honour Her Majesty and the memory.
"And only this morning we saw the prime minister Mr Albanese and the NSW premier (Dominic) Perrottet rename a square in Sydney after Her Majesty in honour of her seventy year service to the Commonwealth."
Transport Minister Mark Bailey said the government hasn't begun to consider a name for the Cross River Rail line, which will open in 2025.
However, he said new rail lines were generally named for their destinations, unlike London Underground lines.
"If you're a commuter passenger overseas, tourists, you need to have a simple system that you understand and that's certainly a consideration when we think about when we come up with new names," Mr Bailey told reporters.
Treasurer Cameron Dick slammed the petition for not being registered on the parliament website, accusing the the LNP of using the Queen's death to collect people's data.
Mr Bleijie's petition asks signatories to fill in their names, suburbs, phone numbers and email addresses.
"I think it's highly disrespectful before the funeral of the sovereign that the LNP should be seeking to gather the data of Queensland citizens for what could only be described as party political purposes," Mr Dick told reporters.
Mr Bleijie defended the private petition, saying a number of Labor MPs have used domains outside parliament, such as Change.org and Survey Monkey to poll constituents.
He said a parliamentary petition would limit possible signatories to Queensland residents, but he promised to lodge it in parliament anyway.
"That's why we've launched the petition the way we have to get people from around Australia who want to travel to Brisbane, and will be eventually catching what we hope is the Elizabeth Line, to have their say," Mr Bleijie added.