Giving a press conference astride a ride-on lawn mower in the car park of a Brisbane pub, Bob Katter has criticised police for a string of "petty" charges.

The Katter's Australian Party (KAP) leader was particularly concerned after the local publican of Prairie, population 100, was charged with driving an unregistered vehicle after travelling on the footpath on his way to voluntarily mow the local school and park.

"So everyone in Queensland that owns a ride-on mower be careful," Mr Katter warned.

"We've now discovered it's illegal. So we're out there chasing these runaway lawn mowers for people doing civic duty and there seems to be druggies running all over the place, completely unassailed."

A court date has been set for November 2 in Townsville, nearly 350 kilometres away.

"This petty, pedantic oppression of the people by the police has to stop. Get out there and do what you are supposed to do," Mr Katter said.

"There are policemen are out there risking their lives doing what they are supposed to be doing whilst others are antagonising the public with this incredible pettiness."

Although Mr Katter said his stunt was in solidarity with the man, he made sure he was not breaking any laws himself when he arrived on the mower.

"We've had legal counsel advising us that this is not a footpath and therefore is not, under the regulations, part of the road system," he said.

'Petty' charges put public 'offside', says Katter

At the Mount Isa rodeo in August a driver was charged with having unrestrained passengers. The truck was a float driving to the parade at the time.

"There are not enough resources to be doing [this] sort of stupidity as well as policing the state of Queensland," Mr Katter said.

Although agreeing the local Prairie policemen were under a lot of pressure and had a very difficult job, Mr Katter said he was concerned police and community relations could be mowed down in the process.

"The most important thing in policing is to have the public onside. This is just the sort of thing that puts the public right offside," he said.

Mr Katter said state politicians were also to blame, by introducing oppressive laws that were making Queensland the most restrictive state in the country.

The Queensland Police Service chose not to comment on Mr Katter's stunt.

ABC/AAP