[Code of Federal Regulations] [Title 49, Volume 5] [Revised as of October 1, 2005] From the U.S. Government Printing Office via GPO Access [CITE: 49CFR387.305] [Page 294] TITLE 49--TRANSPORTATION DEPARTMENT OF TRANSPORTATION PART 387_MINIMUM LEVELS OF FINANCIAL RESPONSIBILITY FOR MOTOR CARRIERS --Table of Contents Subpart C_Surety Bonds and Policies of Insurance for Motor Carriers and Property Brokers Sec. 387.305 Combination vehicles. 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.