Section 250-168-7 - EXEMPT VEHICLES-EXCEPTIONS1. A person operating a commercial motor vehicle on a public way shall obtain a USDOT number to be displayed on the registration certificate for the vehicle. For purposes of this rule, the following vehicles are not considered commercial motor vehicles: A. A vehicle owned and operated by a government agency;B. A vehicle legally operated with dealer registration plates;C. A recreational vehicle, not used in a commercial endeavor; orD. A school bus as defined in 29-A M.R.S.A. §2301.EXCEPTION - 1. Intrastate vehicles to which this rule applies that have a gross vehicle weight rating of 10,001 lbs. to 26,000 lbs., and that neither meet the definition of a "bus" nor transport hazardous materials, are exempt from obtaining a USDOT number.
29- 250 C.M.R. ch. 168, § 7