SIA

Renders city-level signals — traffic, closures, events, crowding, public safety — as heat over a map plane, and scores route corridors against that heat into plain-language guidance. All data enters through one normalized signal contract with mandatory expiry; a live adapter polls Seattle Fire 911 dispatches every five minutes, and a failed pull retains the previous snapshot rather than clearing the map. Personal avoid/prefer zones are stored client-side only and never uploaded.

The problem: navigation apps optimize a turn-by-turn line to a destination. People who already know their city need area-level awareness — what is disrupted right now — to route themselves.

Status: working prototype; one city, one live feed. Public demo and source available. Formerly published here as City Signal.