Right now, the Place de la Bastille in Paris is basically a traffic island: A huge memorial sits in the middle of a road packed with cars. There’s no way to easily cross the street on foot. But that will soon change. The square is one of seven major sites that Paris is redesigning for pedestrians and cyclists.

“Parisians are finding out that what were once admirable squares of theirs are now just intersections,” says Jean Macheras, the Paris delegate of the French Transportation Users Assocation.

The shift started with the Place de la République–until 2013, it was also a busy road, but now it’s a pedestrian plaza planted with trees, lined with benches, and filled with people. The transformation was so popular that the city decided to keep going.

Each of the new designs give pedestrians at least 50% of the space in the square, taking away lanes of traffic even though each of the streets is a major route in the city. At the Place de la Bastille, the square will reconnect with a curb on one side, creating a new green space for people to sit. At the Place de la Madeleine, trees will mark off more pedestrian space and a new weekly market will be added.

In some cases, the designs are based on data. At the Place de la Nation–which has some green space now, but is surrounded by eight lanes of traffic–the city is partnering with Cisco and a company called Placemeter, an “urban intelligence platform” that helps quantify how public space is used. With a set of temporary cameras, which count people anonymously, they’re able to measure how many people are walking and biking, where cars are at any specific location, even how many retirees are playing pétanque.

Placemeter will work with the city to start testing different scenarios, such as what happens if streets are closed in a certain location for a month, or what happens if benches and chairs go in another place, or what happens if bike lanes expand.

“We’re providing for the first time to the city of Paris a dynamic tool to be able to experiment with streetscape redesign, or placemaking, in an agile way, and avoid spending tens of millions of euros in projects that haven’t been tested in real life before,” says Martin Lagache from Placemeter. The formal redesign of that square will start in 2017.