A11yJSON: A standard to describe the accessibility of the physical world
Summary
A11yJSON is an open standard based on GeoJSON designed to describe the accessibility of physical spaces. It provides a structured data model, a TypeScript library for validation, and a Node.js/npm implementation to facilitate interchange of accessibility information, with examples covering places, elevators, menus, and accessibility policies. The approach emphasizes non-linear, object-based descriptions and internationalization to support interoperable accessibility data exchange.