πŸš€ OSOW API is now live!Get your API key β†’

All-In-One Oversize/Overweight API Platform

Explore LoadFlow’s structured OSOW dataset β€” with endpoints for rule lookup, state comparisons, field documentation, plan control, feedback loops, and live update subscriptions.

πŸ“š 50-State Rule Dataset

50-State Oversize/Overweight Dataset

Access every oversize/overweight regulation across all 50 U.S. states β€” including escorts, dimensions, curfews, fees, and restrictions.

Normalized Rule Fields

Every rule is normalized to a unified field schema (e.g., `escort_required`, `max_height`, `weekend_travel`) so you can query across states easily.

Per-State API Access

Use `/api/v1/state/:state` or `/api/v1/state/full/:state` to retrieve full datasets for any U.S. state in JSON format.

Full Dataset Export

Download the entire OSOW dataset in bulk as a CSV or JSON file β€” great for local integration or audit archiving.

Field Nesting Support

Use dot notation (e.g., `axle.groups.1.spacing`) to query deeply nested structures within any state’s dataset.

State Code & Tag Indexing

Search states by name, postal code (`ca`, `ny`), or by tags such as `bridge_laws`, `curfew_banned`, or `pilot_rules`.

Live State Coverage Map

Access the most up-to-date snapshot of all states with API-ready data β€” including freshness indicators and missing field detection.

Versioned Dataset Backups

We keep backups of the dataset for every major update β€” including timestamped JSON and CSV versions, accessible on request.

Unified Structure for All States

No more deciphering PDFs or custom portals β€” LoadFlow presents every rule in a standardized, machine-readable format.

Designed for Developers & Analysts

Every endpoint returns structured data optimized for scripting, visualization, or compliance modeling β€” not just humans.

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