Design signs for a queue with multiple next steps

Given [SPACE PLAN], [QUEUE TYPES] and [ACCESS NEEDS], design a small wayfinding system from arrival to service. List each decision point, exact sign message, viewing distance, placement and fallback when a route is closed. Use consistent terms and arrows; avoid relying on colour alone. Provide a walkthrough test script for first-time visitors and a staff update rule. Do not assert a route is step-free without measurement. Check that no sign sends visitors into a dead end and that the system still works when one entrance is unavailable.