House committee substitute makes the following changes to 1st edition. Amends GS 20-101(b), clarifying that an intrastate motor carrier motor vehicle that is used in intrastate commerce and that is required to have an identification number by the Department of Crime Control and Public Safety must have the carrier's identification number preceded by the letters 'USDOT' and followed by the letters 'NC' printed on each side of the vehicle at least three inches in height. Deletes exception for farm vehicles, as described.