How does H3 handle hierarchical zooming?
H3 tiles the planet at 16 precision levels, each nested inside the previous one. A location's coordinates hash to a high-precision cell ID; stripping digits from the end of the string ID gives the parent cell at coarser zoom, enabling region queries (surge pricing, delivery zones) without re-hashing.
Answered in
Why Uber Tiles the Planet in HexagonsHexagons with equidistant neighbors replace lat/long trigonometry with O(1) table lookups for finding nearby drivers and calculating surge pricing.
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