If you’re planning to operate a commercial bus in the U.S., securing a USDOT number is a crucial first step. Whether you’re launching a charter service, transporting passengers across state lines, or building a shuttle fleet, this identifier is required by the Federal Motor Carrier Safety Administration (FMCSA).

In this article, we’ll walk you through how to get a USDOT number, who needs one, what it costs, and how it ties into safe and legal operations in 2025. This guide is especially helpful for new fleet owners, independent operators, or anyone purchasing a bus for commercial use.

🚌 Looking to get started? Browse our Transit Bus listings to find the right vehicle for your business.

 

Why Getting a USDOT Number Matters

 

A USDOT number isn’t just a formality—it plays a critical role in your business’s compliance and accountability.

Here’s why it matters:

• Legal compliance: It’s required for interstate commercial passenger transport and for most commercial vehicles.
• Safety tracking: The number links your business to safety and inspection records maintained by the FMCSA.
• Regulatory transparency: Law enforcement and state agencies use it to monitor violations or inspections.
• Operational legitimacy: Operating without a USDOT number can result in fines, shutdowns, or revoked licenses.

 

If you’re launching any kind of paid passenger bus service or moving people across state lines, a USDOT number is non-negotiable.

 

Step-by-Step Guide to Getting a USDOT Number

 

1. Understand Who Needs a USDOT Number

 

You must obtain a USDOT number if you:

• Operate a commercial vehicle that transports passengers or cargo across state lines
• Use a vehicle with a gross vehicle weight (GVW) of over 10,000 lbs
• Transport 9 or more passengers (including the driver) for compensation
• Are required to carry hazardous materials (less relevant for buses, but still worth noting)

 

💡 Even if you’re operating within a single state, some states still require a USDOT number for intrastate carriers.

 

2. Complete the USDOT Number Application

 

You can apply online via the FMCSA’s Unified Registration System (URS). During the application, you’ll need to provide:

• Business contact info
• Type of operation (interstate or intrastate)
• Vehicle type and use (passenger transportation)
• Number of vehicles
• Whether you need additional credentials like an MC number

 

📝 Dot number application is free, and most applicants receive a number immediately upon submission.

 

3. Display Your USDOT Number Correctly

 

Once you receive your number, you’re required to:

• Visibly display it on both sides of the bus
• Use contrasting colors so the number is clearly legible from 50 feet
• Include the prefix: USDOT [your number]
• Keep the number current and linked to your active business registration

 

Failure to display the number properly can lead to inspection delays or penalties.

 

Who Needs This Most?

 

Getting a USDOT number is essential for a wide range of operators:

• Charter companies starting up with new buses
• Shuttle operators providing airport or city routes
• Tourism businesses offering multi-state excursions
• Schools or universities with passenger transport across borders
• Transit authorities expanding service areas
• Private operators entering the commercial passenger transport market

 

Whether you’re buying one vehicle or managing a small fleet, the USDOT number is your federal ID for safe, legal operation.

 

Pro Tips and Best Practices

 

Here are some actionable tips to simplify the process and stay compliant:

• Don’t delay—apply before your first commercial trip.
• Review FMCSA requirements annually, especially if your operations grow or expand into new states.
• Track inspections and incidents tied to your number. Your safety rating is public.
• Verify if you also need an MC number, which applies to for-hire carriers across state lines.
• Update your registration anytime your business details change.

 

🚐 Explore our latest Transit Buses and get your operations on the road—fully compliant and inspection-ready.

 

Conclusion

 

Getting a USDOT number for your bus is a critical step in building a successful commercial transportation business. It ensures compliance, establishes your operation in the FMCSA system, and protects your company legally.

At BusesForSale.com, we help operators like you find the perfect bus to grow your business. Once you’ve found the right vehicle, securing your USDOT number is the next move toward launching a safe, legal, and trusted transportation service.