In an aging society, the requirements for the design of public spaces are also changing. Not only buildings themselves but also their surroundings must be barrier-free to ensure unrestricted usability and accessibility for all people. The manual "Barrier-Free Traffic and Outdoor Facilities" explains the requirements of the new DIN 18040-3 "Barrier-Free Construction - Planning Principles - Part 3: Public Traffic and Open Space" as well as other technical standards and regulations. It also covers the external access to buildings and the design of private outdoor facilities, as well as open and green spaces, playgrounds, etc. Clear drawings and tables, along with illustrative example projects, demonstrate both the requirements and concrete solutions, adaptations in existing structures, and detailed alternatives. Content includes: Fundamentals and regulations.