Barcelona's innovative 'superblocks' strategy could make modern cities more sustainable and resilient - and safer and healthier for residents. Car traffic is mostly banned inside the groups of 3×3 city blocks, and spaces for parks, pedestrians, and cyclists are expanded. Surrounding streets are open to car traffic but have speed limits of just 10 to 20 km per hour. Superblocks let residents walk to shops, schools and restaurants, without dodging traffic or queueing at corner crosswalks. Over the long term, Barcelona plans to introduce superblocks across the entire city. To help other cities see if it would work for them, a Swiss analyst has developed an automated system to evaluate the potential for such transformations in different cities.

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