If you perform trade, traffic, or transportation exclusively in your business’s domicile state, this is considered intrastate commerce.
U.S. DEPARTMENT OF TRANSPORTATION Federal Motor Carrier Safety Administration, 2014 December 12th https://ask.fmcsa.dot.gov/app/answers/detail/a_id/249/~/what-is-the-difference-between-interstate-commerce-and-intrastate-commerce%3F