Cynefin domain
Clear
Also: Obvious, simple (older names)
The Cynefin domain in which cause and effect are obvious to anyone: rules and procedures work, scale and make things predictable.
Road traffic, supermarkets, large sporting events and traditional sports are largely clear: a high number of rules keeps them running. The approach is sense–categorise–respond, and best practice applies. The risk is complacency — clear systems held too rigidly can tip suddenly into chaos.