Teresa May wants a fairer, sharing society. She could start on our roads and public spaces. Replace priority with equality, enabling peaceful give-and-take among all road-users. In the absence of a bridge or flyover, let all junctions be filter (more or less) in turn. That would bring real progress in fairness and sharing. It would transform road safety and air quality, and free up the tens of billions squandered on traffic control for constructive use elsewhere.