49 C.F.R. § 387.305 Combination vehicles.
Title 49 - Transportation
The following combinations will be regarded as one motor vehicle for purposes of this part, (a) a tractor and trailer or semitrailer when the tractor is engaged solely in drawing the trailer or semitrailer, and (b) a truck and trailer when both together bear a single load.
Title 49: Transportation
PART 387—MINIMUM LEVELS OF FINANCIAL RESPONSIBILITY FOR MOTOR CARRIERS
Subpart C—Surety Bonds and Policies of Insurance for Motor Carriers and Property Brokers
§ 387.305 Combination vehicles.
