Automate OSOW Permits with a Single API
Instantly access 50-state oversize/overweight permit rules and build smarter workflows — without PDFs, portals, or phone calls.
Trusted by logistics innovators
Trusted by modern logistics teams
What You Can Do with the OSOW API
Empower your platform to automate state-by-state oversize permit intelligence with structured API access.
- Eliminate portal logins and PDF digging
- Pull permit rules by state, field, or carrier in real time
- Stay compliant and avoid oversize fines automatically
Field-Level Search
Search escort rules, curfews, max dimensions, license types, and more by field.
Map Pin Coverage
Know which states apply which rules. Visualize your route risk.
Shield-Level Compliance
Avoid permit rejections and flag potential violations before dispatch.
Compare State Rules
See side-by-side differences in axle weight, time limits, and more.
Smart Notifications
Get alerts when states update their OSOW rulebooks or override limits.
Developer-Ready
Use our REST API with clear docs, state filters, and rate-limited tier plans.
Use Cases That Deliver ROI
From dispatchers to developers, OSOW API eliminates friction, prevents fines, and streamlines compliance.
Avoid Costly Fines
Ensure proper permitting in every state before dispatch.
Reduce Wait Times
Automate rule checks and submissions in minutes, not hours.
Integrate Instantly
Drop-in REST API with clear documentation and fast support.
Streamline Operations
One system for 50 states — no more portal juggling.
The Stats Behind the System
Our infrastructure powers permit logic for fleets, brokers, and SaaS platforms alike.
Trusted by Logistics Teams Nationwide
States Supported
Permits Parsed
Uptime SLA
Avg Integration Time
Permit Intelligence Meets Performance
- Real-time rule engine with updates tracked across all states
- Portal automation, escort detection, and route risk insights
- Optimized for developers, ops teams, and permit services
Try the Live API Demo
Explore a real-time preview of the API. No login required.
Live API Response Preview
Try a sample query for a state to see how the API responds with permit intelligence.
{
"state": "TX",
"max_weight": "80,000 lbs",
"escort_required": true,
"restricted_days": [
"Sunday",
"Holidays"
],
"submission_method": "Portal"
}Hear From Our Users
Hear From Our Users
Trusted by professionals across logistics, fleet management, and tech.
“OSOW API helped us automate multi-state permit workflows we previously managed manually. Huge time-saver.”
Sam B.
Fleet Manager
“We integrated OSOW into our TMS in under a day. Support was top-notch and the data structure is clean.”
Maya R.
Logistics Engineer
“As a permit broker, I used to rely on PDFs and emails. Now it’s a simple GET request. Total game changer.”
Troy L.
Permit Coordinator
Ready to Eliminate Permit Bottlenecks?
Start using LoadFlow’s OSOW API for instant access to 50-state oversize/overweight regulations. No paperwork. No guessing. Just compliance.