Case study · Jacksonville, Florida

In production since October 2026: Zenith and Meridian running on Jacksonville's records and public data, with a Parallax pilot.

12,639
land blocks in Duval County
1,000+
public sources
334,713
building footprints

Research note · October 2026

Estimated injury crashes per block in 2024, from the Polisynth model: 12,639 land blocks, ranked from highest to lowest.

  1. ReferenceAn equal share would put 5% of crashes on every 5% of blocks.
  2. EstimateRanked by the model's estimates, the share rises far faster.
  3. Top 5%The top 5% of blocks carry 44.6% of estimated injury crashes. The top 1% carry 15.7%.
  4. Top 10%The top 10% of blocks carry 62.6%. For a fixed safety budget, this shows where spending reaches the most crashes.
Source: Polisynth model, Jacksonville pilot. Estimated injury crashes per block, 2024.

Data

  • 12,639Land blocksU.S. Census Bureau, 2020 census blocks
  • 334,713Building footprintsCity of Jacksonville
  • 38,452Crashes recorded in 2024Florida crash records (FLHSMV), via the City of Jacksonville
  • 9,636Registered facilitiesU.S. EPA Facility Registry Service
  • 2024Vegetation index by blockSentinel-2 satellite imagery
  • 2024Estimated injury crashes by blockZenith, Jacksonville deployment

Timeline

  • October 2026DeploymentJaxBridge in productionZenith and Meridian on Jacksonville's records and public data.
  • September 2026FilmLaunch film for the Jacksonville pilot57 seconds of the model's own outputs, from block-level estimates to simulated residents.

Contact

Email Polisynthfounders@polisynth.com