Autonomous vehicles could reshape cities, but only with smart regulation and open protocols

Autonomous and shared on-demand vehicle fleets could theoretically replace multiple private cars with a single continuously moving vehicle, freeing up urban space currently used for parking. Because self-driving cars can have speed limits enforced technologically rather than left to driver discretion, traffic could become more predictable and public transport more reliable. Synchronisation with traffic signals and public transit schedules could further reduce congestion, emissions, and journey times. However, without active regulation, autonomous vehicles risk a rebound effect — increased travel demand, empty cars circling streets, and persistent private ownership — negating urban benefits. Experts also warn that data-sharing protocols between vehicles and infrastructure must remain open and decentralised to prevent systemic fragility tied to a single corporate or governmental actor.