The Liberal National Party has promised to trial a youth curfew in Townsville and detain teens in community centres as part of its plan to stop crime.
LNP leader Deb Frecklington says under her state election pledge police will be able to detain youths found on the streets after curfew.
The teens, who are mostly Indigenous or live in distressed households, will be forced to stay in a community refugee until they're picked up by family.
Parents will also be fined $250 every time one of their children is detained.
"We would need to amend the legislation to give the police the power ... to take the children from the streets and put them in the refuge," Ms Frecklington said.
"This is all about keeping our children and our community safe. I will not apologise for being tough on crime."
People under the age of 14 will have to be indoors by 8pm, while those aged 15 to 17 will need to be off the streets by 10pm.
LNP candidate Glenn Doyle said detained children could be connected with social services.
"They do come from dysfunctional families, but we need to have the opportunity to engage them with health, with child services, with youth justice," he said.
South of Townsville, Premier Annastacia Palaszczuk promised to build an inland freight highway between Charters Towers and Mungindi.
"A second Bruce Highway would take trucks off the existing Bruce, making it safer for communities from Gympie to Townsville," she said.
"Activating an inland freight route will also reduce travel times, support jobs and increase economic activity."
Her promise rivals an earlier pledge by the LNP to widen the existing Bruce Highway from two to four lanes for 1450km from Curra to Cairns.
The opposition plan would cost $33 billion over 15 years, with the state chipping in $440 million annually and the federal government expected to cover the rest.
The LNP leader also flew to Cairns on Wednesday to pledge $180 million to upgrade Cairns Hospital into a university hospital.
"The university hospital will catapult Cairns health services into a new era, and patients will be able to get advanced treatments at this state-of-the-art facility," she said.
"Far North Queensland has waited too long for its fair share under Labor."
Labor has previously promised $67.9 million to upgrade to Cairns Hospital.
Ms Palaszczuk says she will work with James Cook University to revamp the facility so students can practise medicine there.
Labor lead the LNP 51 per cent to 49 per cent on a two-party preferred basis in a Roy Morgan poll released on Wednesday.
The pollster said Labor's primary vote was up 0.6 per cent to 36 per cent since 2017, while the LNP's has risen 1.3 per cent to 35 per cent.
Meanwhile, Labor's border closure to NSW was backed by 51 per cent of respondents.
Roy Morgan said 51 per cent of men wanted the border to reopen, while only 43 per cent of women wanted the change.
Queenslanders go to the polls on October 31.
Australian Associated Press