Free carrier tools
Get a useful answer first. Each tool explains its source, limits and practical next step without asking for contact details.
MCS-150 Biennial Update Checker
Calculate the scheduled FMCSA filing month and biennial year from a USDOT number.
Check a due dateDOT Compliance Checklist Builder
Create a tailored starting checklist for registrations, drivers, vehicles and safety controls.
Build my checklistDOT Drug Testing Requirements Checker
Review whether 49 CFR Part 382 is likely to apply and see the required testing categories.
Check requirementsCommercial Vehicle VIN Decoder
Decode manufacturer and vehicle specification data through the official NHTSA vPIC service.
Decode a VINDo I Need a USDOT Number?
Check the federal motor-carrier criteria for vehicle weight, passengers, hazardous materials and interstate commerce.
Check my operationBuilt around primary government sources
The calculators use published FMCSA rules. Vehicle data comes from NHTSA vPIC. No tool result is based on a scraped or unverified third-party source.