This document discusses urban transportation planning and public health. It notes that over 50% of the global population now lives in urban areas, up from 30% in 1950 and 14% in 1900. As cities have grown, citizens are becoming less physically active and more obese. Sustainable urban transport systems that avoid, shift, and improve mobility can save lives by making cities safer and more accessible for all users, including the elderly, disabled, poor, children, and commuters. Recommendations include reducing vehicle speeds, which can significantly reduce pedestrian fatalities and injuries, as well as implementing road safety audits and transit-oriented development to encourage walking, biking, and public transit use. The Cheonggyecheon River renewal project