Utility corridor: write inspection as a retrievable asset event

A utility corridor looks like a hallway. Operations are subcontracted by trade. A hot electrical joint, a water leak, a deformed comms tray, a corroded fire main — interpretation does not sit with one crew. If the product outputs a single “AI says there is a problem” score, the field cannot act. Correct output is: which segment, which asset class, which evidence, what confidence, who reviewed.

Shenzhen underground-utility data standards give a public mapping target. PG-Atlas should map codes and spatial fields from the first edition, even before flight scores exist. Data work can precede the prototype. That is a Hong Kong-side job in the HK–SZ split.