The Auckland Council is extending a crackdown on windscreen washers at busy intersections.
The council said it was getting about 40 complaints a month from frustrated motorists.
The council said, over the past two months, staff had gathered evidence about 220 separate breaches of bylaws, and collected information on more than 60 individuals.
It was working with police to identify offenders, and the council said sharing information was making prosecutions more viable.
The police had already announced they were taking a tougher line on any offending.
In a recent joint operation at a Mt Wellington intersection, 13 people were found window washing over a two-day period.
The council's manager of bylaws and compliance, Max Wilde, said court action would be on top of fines and trespass notices.
"They can face a fine of typically $200 to $300 - those are the types of fines that have been handed down previously.
"Where we are looking at repeat offenders we are looking at the possibility of trespass notices as well."
As well as breaches of council bylaws, police have arrested several people for various unrelated offences. They said they were concerned about the number of people found window washing who had outstanding criminal matters.
The police had also come across young people who should be at school, including a 13-year-old who had been reported missing by his parents.