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Case study · Software development

Crash Data Analysis

A workspace for DOT crash records, zone-based mapping, interactive dashboards, and PDF reports.

Built by James McWilliams.
Demo job: Broadway (NY 107) at Bloomingdale Rd, Hicksville.
Crash records from NYSDOT, released under FOIL.

Crash tool map of Broadway and Bloomingdale Road in Hicksville on the NYS aerial, with a collision symbol for each NYSDOT crash record.
Map · NYSDOT crash records

55 crashes from 2021 to 2026, each drawn as its collision type and severity.

Analytics dashboard for the Hicksville intersection with crash severity, collision type, and time charts.
Dashboard · NYSDOT crash records

Severity, collision types, and time patterns from the same records.

Report options for the Hicksville intersection, with a preview of the crash history summary table.
Reports · NYSDOT crash records

The crash history summary, with PDF and Excel outputs.

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The buildCrash Data Analysis

What the tool does.

Crash mapping

Imports crash records and maps them by collision type, severity, and zone.

Interactive dashboards

Twelve charts with filters for zones, years, severities, and date ranges.

Heatmap

Switch from collision symbols to a heatmap of the same crash records.

PDF and Excel reports

Download dashboard and crash-summary PDFs, an Excel workbook, and collision-diagram PDFs.

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