# Hobsons Bay crash-to-SCATS match v0.1

- LGA: `HOBSONS BAY`
- SCATS file: `A:\TrafficAnalytics\PROJECTS\council_traffic_reports\reports\latest\csv\council_scats_site_rankings_enriched_v0_3_2.csv`
- SCATS site ID column: `site_id`
- SCATS site name column: `site_name`
- SCATS movement/exposure column: `total_scats_movements`
- SCATS lat/lon columns: `lat`, `lng`
- Match radius: `250.0` metres

## Counts

- Crash records with lat/lon loaded: `2,912`
- SCATS sites loaded after filtering: `54`
- Crash records within match radius: `1,037`
- Crash records outside match radius: `1,875`
- SCATS sites with matched crashes: `53`

## Outputs

- `hobsons_bay_crashes_nearest_scats.csv`
- `hobsons_bay_scats_harm_summary.csv`
- `hobsons_bay_scats_unmatched_or_far_crashes.csv`

## Public method note

This is a first-pass proximity match between crash coordinates and nearby SCATS sites. It is designed to identify candidate exposure-adjusted road-harm locations for further review. It is not an engineering safety audit and should not be treated as final attribution of crashes to specific signal sites.