Western Australia Intersection Crash Aggregates 2019-2023

Western Australia crash data aggregates total intersection collisions recorded over a five-year period. The dataset covers the calendar years 2019 to 2023, with 2024 records temporarily removed. It is provided by Main Roads Western Australia from the Integrated Road Information System (IRIS).

Use Cases

• Analyze total crash frequency per intersection to identify high-risk locations for road safety interventions.
• Map aggregated crash data from the GEOJSON format to visualize spatial clusters of collisions.
• Assess temporal trends in intersection safety by comparing annual crash aggregates across the 2019-2023 period.

Strengths

• Covers a defined five-year period from 2019 to 2023.
• Sourced from the authoritative Integrated Road Information System (IRIS) maintained by Main Roads Western Australia.
• Available in multiple formats including GEOJSON, KML, and CSV for different analytical needs.

Limitations

• Contains aggregated totals only; detailed records per crash (e.g., severity, cause, vehicle type) are not present in this summary layer.
• 2024 data is temporarily excluded, creating a recency gap.
• Geographic scope is limited to Western Australia, not nationally representative.

Provenance

Source

Main Roads Western Australia, Commissioner of Main Roads.

Collection Method

Recorded in the Integrated Road Information System (IRIS).

Time Range

2019 to 2023.

Freshness

Last updated in March 2026, though the data itself covers up to 2023.

Geography

Western Australia, Australia.