And now they don’t know what to do now that alternate-side parking has been temporarily suspended while the Department of Sanitation replaces street signs this summer:

Park-Anywhere Day arrives Monday, with the indefinite suspension of alternate-side parking rules in Park Slope, and no one knows just what to expect, with bring-it-on bravado and it-can’t-get-any-worse resignation meeting just-you-wait-and-see predictions of the worst. The city announced the suspension in Park Slope this week, to give workers time to change 9,200 parking signs. In the meantime, drivers may park along the curbs of Park Slope without being forced to move their cars as they did up until now, often twice a week for three hours at a stretch.

Rosemary Fine, 47, a coffee shop owner born in Limerick, Ireland, plans to greet the new day in high style.

“I’m going to pop open a bottle of Champagne, sit in my car and celebrate!” she said on Thursday. “What if that’s what all the Park Slopers did on Monday, we went into the streets with Champagne?”

But elsewhere, outrage.

Another seasoned immigrant, Marlyse Henchoz, who did not give her age, stopped sweeping in front of her home and said, “Terrible.”

“Whoever thinks up these schemes, I don’t know what they are thinking,” she said. “That’s why I want to move back to Switzerland. They couldn’t do this. We have referendums and we vote.”

. . .

The Department of Transportation estimates that the suspension will last a few months. So after the Champagne is gone, there will be several lingering questions about what people are and are not allowed to do with their vehicles.

City law prohibits “street storage” of vehicles: “When parking is not otherwise restricted by posted signs, no person shall park any vehicle in any area, including a residential area, in excess of seven consecutive days.”

The police said Thursday that they did not have records of how often such a ticket was written, or how such a violation could even be tracked, short of cumbersome surveillance of every vehicle.

. . .

One benefit of the new signs in Park Slope will be that alternate-side rules will now be in force only 90 minutes once a week, down from three hours and twice a week.

But even that concept seemed to backfire with some residents, like Barat Ellman, 49, a university Bible instructor.

“I work out and plan my work schedule based on car parking,” she said. “Ninety minutes may be too short of a time to be able to get things done and move the car. We’ll see.”