Its owners must have brain-freeze.

An ice-cream-truck company accused of racking up $4.5 million in traffic fines struck a deal with the city Monday to get back 35 of its vehicles — only to pick up where it left off Tuesday by apparently flouting the law again.

Seven trucks whose drivers said belonged to New York Ice Cream or bore the company’s label were spotted by The Post blocking Manhattan crosswalks.

Last month, 46 of the company’s 76 treat-mobiles were yanked from the street for accruing the whopping sum in unpaid tickets.

The company’s subsidiaries had amassed nearly 23,000 traffic infractions between 2009 and 2017, the city said.

Most of the tickets were issued in Midtown for offenses including speeding, running red lights and illegally using bus lanes.

Rather than paying the fines over the years, the company’s owners simply dissolved the subsidiaries they were registered to and started new ones, a civil-court complaint alleges.

As part of its negotiations with the company, the city agreed to an “interim stipulation’’ that allowed New York Ice Cream to get back several dozen of its trucks to do business to help pay off the debt, according to Manhattan Supreme Court documents filed Monday.

By Tuesday night, amid 80 degree temperatures, seven of the company’s ice-cream trucks were peddling frozen treats in Midtown while partly blocking busy crosswalks.

One driver, slinging ice cream on West 46th Street and Sixth Avenue, told a Post reporter he was allowed by law to block the crosswalk for 30 minutes at a time. The NYPD did not return a request for comment from The Post.

Another ice cream truck with the New York Ice Cream logo was spotted impeding the crosswalk on West 49th Street and Sixth Avenue. The driver said he’s never been ticketed for doing so.

Several other trucks, including one posted up on Central Park South and Sixth Avenue, were seen partially obstructing city crosswalks, too.

It wasn’t clear if the vehicles were part of the newly freed fleet.

Robert Giusti, a lawyer for the five owners of New York Ice Cream involved in the scheme, did not respond to a request for comment.

Earlier in the day, a city official said the city would “closely monitor’’ the trucks under the deal.

If the trucks break the law, or the owners default on their payments, the city has the ability to retrieve the trucks — plus 11 additional ones, the documents said.

Additional reporting by Haley Lerner