Mobility and movement of resources is life sustaining and enhancing. Yet transport and mobility systems in countries across the world present a complex tangle of freedoms, benefits, health problems, physical dangers and restrictions. This think-piece argues that we should reframe thinking about transport so that equality – recognition that each and every person matters – becomes the starting point. Transport planning would then aim to ensure that each person can obtain the benefits of mobility, and to minimise social and health inequalities caused by transport. These premises would help us reconcile what can seem to be conflicting social and environmental goals. Practically this would mean treating transport as a matter of social and environmental justice, and thus making it a priority to ensure that people can move freely on foot, bicycle, and wheelchair, coupled with comprehensive, accessible public transport operated as a public good. This approach contrasts starkly with existing mobility systems that prioritise motor traffic and aviation. These existing systems create huge problems for human wellbeing, ironically restricting freedom for many people to move around safely and to participate in society, while damaging economic welfare, and causing serious harm to other species and the natural environment. Reframing transport as a justice issue also challenges existing political discourses and assessment tools, which have tended to encourage systems with heavy reliance on motorised transport and aviation, and which act as a barrier to a just transport system. The think-piece explores how a move to a just mobility system can draw broad political and public support by promoting multiple social, economic and individual interests. It outlines new methods of assessment and public participation in decision-making which could support a transition toward a more just transport system.