The answer: OsmAnd's custom-built Highway Hierarchy (HH) Routing. This isn't your standard routing engine; it's a ground-up redesign, meticulously engineered to overcome the unique challenges of providing advanced navigation on compact, offline-first map data.
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B. User Route Request (Query Time - this is what happens on your device):
走进山西电力交易大厅，记者看到屏幕上实时显示火电出力量、风光发电量等数据。