Hotspot method (Beta V1)

Grid size: 0.002 deg
Severity weights: 1=1.0, 2=2.0, 3=4.0
Severity levels in this map: 1 = lower, 2 = medium, 3 = highest
Vehicle-type codes: MA motor vehicle, PP bicycle, JK pedestrian, MP moped/motorcycle
Marker color buckets: 1-10, 11-30, 31-60, 61-120, 121+ incidents
Heat colors (blue/teal/green/yellow) show local intensity in the heat layer
Layers: all years + single-year and range controls
Note: concentration-based score, not exposure-adjusted risk.