Building a Routing Graph from OSM: Transition Constraints and Path Constraints Why a road network needs explicit constraints, not just nodes and edges
Road Networks Are Execution Models, Not Stored Geometry On semantics, projection, and the architectural difference between stored geometry and executable movement constraints
OpenStreetMap Is Not a Routing Model And Treating It Like One Is Expensive The structural misalignment between OSM’s flexibility and the deterministic demands of production routing systems.