The article is in Dutch, so I've put a (mostly) machine translation below.
Berlin car free? Plan for referendum leads to fierce resistance
The Berlin state elections are not until September, but already the German capital is full of campaign posters. The topic is perhaps the most radical traffic plan in the world: a virtually car-free Berlin. Activists want to force a referendum on this, right-wing parties are actively campaigning against.
It is a bill that a group of lawyers, traffic experts and green activists have worked on for years. The idea is to significantly restrict car traffic within the ring railway line, an area where about 30 percent of the nearly four million Berliners live. With no less than 88 square kilometers, the area is about the size of Eindhoven.
People would only be allowed to drive a car in this area twelve days a year. There will be exceptions for emergency services, taxis, people with disabilities, freight traffic and people with crucial occupations. The rest will have to go on public transport, by bike or on foot.

It would lead to fewer traffic accidents, nuisance and emissions. The space that is opened up can be used for cycle paths, greenery and seating. "Or playgrounds... or urban libraries," Marie Wagner, one of the initiators, daydreams. "And finally, kids can cycle safely to school."
Opponents point to higher traffic burden on surrounding neighborhoods and economic damage, as businesses would leave and shops would become less accessible. Wagner dismisses those claims. "Only 9 percent of shop revenue within the ring comes from people who travel by car," she says.
"Moreover, research has shown that more attractive streets lead to more consumption, because people stay there longer." Whoever has to and should be allowed to use the car, such as handymen, can move through the city more easily, is the idea.
Colleague Gerald Stefani insists the activists are not against the car itself. “We don’t want to abolish car use, we want to regulate it. Also, with twelve car days a year, much remains possible, such as large grocery trips and moving house." He is not worried about the implementation. "For each ride you could request a QR code online."
Resistance in car city
Berlin is a car city. In the growth period around 1900, the Gründerzeit, the distinctive Berlin rental blocks were set up wide along wide streets. The car was later easy to fit in. Destruction by World War II, the construction of the Berlin Wall and demolition drive of post-war city planners paved the way for wide motorways.
The initiative encounters fierce resistance from local politics. Right-wing parties like CDU, FDP and AfD have filled the city with posters with 'Autofrei? Nein!' (Car free? No!) and 'Car verbieten verboten' (Car ban forbidden). CDU Mayor Wegner speaks of a "well-intentioned dream of an urban idyll, but which will lead to a nightmare."
His party is at a loss in the upcoming state election and is being polled as equally large as the Greens and Die Linke, as well as the AfD. The image of "the left" who wants to take your car is a campaign gift. Therefore, the left parties are likely to keep their distance on this theme; they have not put up posters for the traffic referendum.

The anti-campaign is helpful, Stefani says. It raises awareness: "There are people who come to sign because of the CDU posters." According to Wagner, almost all parties want to reduce car use, but they do not dare to take big steps.
"The car is deep in the German psyche," Stefani says. "It has been so important for German economic development that changes on the area of cars automatically provoke resistance. We also see that with the discussion about a maximum speed."
The activists are in the final stage to force a referendum in September: the collection of 174,000 signatures. That was difficult in the winter months, but now there is a catch-up sprint. With one more day to go, it looks like a toss up whether they will make it, says Marie Wagner. "It's more exciting than a krimi."
At Alexanderplatz, the activists ask Berliners for their signature. One signs directly ("It's certainly not radical, the current pollution is radical!"), the other dismisses the proposal ("Fewer cars fine, but not mine").
A woman doubts. She lives inside the ring and has a car. "It's useful for groceries." Still, she finds the idea exciting. After some persuasion from the activists, she signs. "Maybe good, then I'll finally be forced to cycle."
I do fear that, even if they get the signatures for a referendum, the proposal might be too radical for the average Berliner to vote in favour of. It is one thing to restrict the circulation of cars in neighbourhoods, and it's another entirely to effectively ban private transport in a significant part of the city.
I wonder if a more nuanced approach, like an improved traffic circulation plan or the introduction of congestion pricing, would be a more effective pitch to the average voter.
Then again, I am not from Berlin, so ultimately it's not up to me.
Even if they do the get the signatures, it will be a huge uphill fight in the public vote. The strange part is that the public are more open to the idea than you'd think. Within the S-Bahn ring (the area proposed to turn into a pedestrianized zone), only about 10% of all trips are taken via private car. It's an astonishingly low number for a modern city. A very large portion of the populace truly do live here without using a car for the majority of trips.
Would a more moderate plan likely do better? I'm not sure. Germany is heavily burdened by an older voting population pulling Boomer-like approaches to "don't change anything, I liked how it was in the 1970's" kinds of policies. I'd almost rather have a big vision be put forth instead of a weak center right one. Most of the polls show that once you put forward strong leftist/socialist ideals there's more support available than you think, but it's got to be big enough to get the younger populace to actually think you're on their side for once.
I'm curious about the implementation. Maybe the first month it is just one block that is car-free. Everyone gets to see how it goes, they get to make plans,...
The next month it is 2x2 blocks. Same thing.
Then 3x3,...
But guarantee that the rollout timeline cannot easily be stopped or delayed.
What I would be afraid of is a reaction against car-free if people didn't like it. Looking on here it doesn't look like that happens much https://en.wikipedia.org/wiki/Pedestrian_zone#By_region_and_country.
Still I would love to watch a documentary about places that have switched and what the process was like. Did they do it all at once? Did they go by stages?