CrashStats · Victorian traffic exposure program

Every road, counted.

Traffic volumes for 1.27 million Victorian road sections — estimated from cameras, signals, telco movement and ground-truth counts, and shipped with uncertainty bands, not false precision.

1,267,052 road sections, coloured by estimated daily traffic — no basemap, just the volumes.
1.27M road sections Uncertainty on every estimate Validated against ground truth Feeds crash-risk & evaluation tools
Live traffic camera frame with automated vehicle detections
A live traffic camera becomes a traffic counter — automated vehicle detection, 46 vehicles in frame. Night operation uses headlight counting.
The instruments

The ways we see the unseen traffic

No single sensor covers a state. The layer fuses what each instrument sees — and each one is a working system you can open.

camprobe → Night traffic camera frame with detections

Cameras that count — day and night

Live traffic cameras turned into counting stations. Day counts by vehicle detection; night counts by a purpose-built headlight pipeline.

 SCATS study → Signalised intersection detector map, blueprint style

The signals network as a sensing grid

Every signalised intersection already measures traffic. Controller detector maps like this one anchor volumes at thousands of intersections.

 DSPARK → DSPARK x Optus mobility data delivery overview

Telco movement at population scale

1.2 billion car trips a quarter from network mobility data — exposure where no roadside instrument exists.

 validation → One week of hourly traffic counts at a rural highway site

Ground truth keeps the model honest

Tube-count surveys from DTP open data are held back as truth: a week of hourly counts, site by site, against the estimate.

 what-if studio → What-If Studio module — closure and detour shift

Ask the network what happens next

Close a road, shift the demand: exposure and kinetic-energy deltas on the live layer — scenarios, not opinions.

 the technical estate → Melbourne metro road network by traffic volume

The layer itself

Metro Melbourne by volume. Behind this page sits the full technical estate — method registers, releases, commissioning and audit trails.
The differentiator

Uncertainty, honestly stated

Every section carries a band, not just a number. Where the instruments agree, the band is tight; where they don't, the band says so — and decisions can price that risk instead of discovering it later.

estimate · 80% band · 90% band