GARDAI are investigating a claim that 10 of the protesting Quinn truck drivers did not have a permit to enter the city's five-axle cordon last Tuesday.
Cllr Gerry Breen, of Fine Gael, has dubbed offending truck drivers "Quinn HGV cordon busters" and he said they are now liable to be fined €800 if they are prosecuted.
Cllr Breen told the Herald: "They're liable for prosecution, and I'm saying prosecute them. It's either enforceable and we enforce it, or we don't have the law at all."
Five-axle lorries are not permitted to enter a restricted area of Dublin City between 7am and 7pm, seven days a week, unless they obtain a permit from the council.
A convoy of almost 300 trucks drove to Dublin city to protest against the ban on Quinn Insurance writing new business in the UK last Tuesday morning.
A garda spokesperson told the Herald that the matter is under investigation. But one of the organisers of the protest, Barry O Reilly, said only 50 trucks entered the city limits, and all truck drivers were sent information on how to get a permit.
"We told everyone taking part to make sure that they had permits if they needed permits. I'd imagine that anyone who was in the city centre had a permit and I'd be surprised if they didn't."
However, Cllr Breen said protests like the convoy are interfering with businesses in the city being able to run effectively.
"Dublin city has thousands of employees and workers, and why should our city be endangered because a group of employees are frustrated?"
Cllr Breen said 20pc of all retail spaces in the city were vacant due to the recession and that protests were further affecting the city's trade.