The difference a vowel makes: Intrastate vs. interstate
It can be confusing to know whether you’re subject to the federal (interstate) or state-specific (intrastate) motor carrier safety rules.
If you guess wrong, you could face fines and penalties.
Look to the definition
Interstate operations are automatically subject to the Federal Motor Carrier Safety Regulations (FMCSRs), without exceptions, regardless of the state in which the vehicle is traveling.
Any evaluation of interstate or intrastate begins with the definition below from 390.5T:
Interstate commerce: Trade, traffic, or transportation in the United States:
- Between a place in a State and a place outside of such State (including a place outside of the United States);
- Between two places in a State through another State or a place outside of the United States; or
- Between two places in a State as part of trade, traffic, or transportation originating or terminating outside the State or the United States.
The first two parts of this definition are pretty clear — a vehicle crossing a border means interstate commerce.
It's the third part of the definition that complicates things — interstate commerce is trade, traffic, or transportation involving the crossing of a state boundary. When either the vehicle, its passengers, or cargo cross a state boundary, or there is intent to cross a state boundary, the carrier is considered an interstate carrier.
What if you’re intrastate commerce?
Many states adopt and enforce a majority of the FMCSRs for intrastate operations but may make exceptions or revisions for a particular size of vehicle or type of operation. A few states’ regulations have little direct correlation to the FMCSRs. Certain intrastate operations are also subject to the insurance requirements in Part 387 (when transporting specific hazardous materials) and whatever other regulations, FMCSRs or otherwise, the state has established.
In addition to how the FMCSRs apply to intrastate operations in each state, states usually have other requirements. These requirements may include accident reporting procedures, vehicle size and weight limitations, operating authority/insurance, vehicle licensing, and fuel tax reporting.
You may be operating vehicles that are intrastate as far as the International Registration Plan and International Fuel Tax Agreement are concerned, but interstate for DOT safety and Unified Carrier Registration Agreement compliance. Correctly classifying your operation will keep you in compliance.
Intrastate operations involving vehicles that meet the definition of “commercial motor vehicle” found in 383.5 are automatically subject to Part 382 (alcohol and drug regulations) and Part 383 (CDL regulations).
Additional resources
Need state-specific information? Check out Compliance Network’s Regulatory Cross Reference Guide. This resource contains state-specific rules for motor carriers, as well as a variety of workplace safety issues.
Questions?
If you have a question on interstate or intrastate requirements, we encourage you to reach out to our compliance experts using Expert Help. We're always happy to assist.