Paris is introducing a new car-sharing lane on the Périphérique ring road during peak hours to alleviate congestion and reduce pollution. The leftmost lane will be reserved for vehicles with at least two passengers, public transport, taxis, and emergency services. The policy, tested during the 2024 Olympics, aims to improve air quality and reduce traffic jams, with fines for violators. While some officials support the initiative, others, like Valérie Pécresse, express concerns about potential congestion increases. Paris is part of a broader European trend toward reducing car dependency and enhancing public transport.