49 U.S.C. § 13504: Exempt motor carrier transportation entirely in one State

Neither the Secretary nor the Board has jurisdiction under this subchapter over transportation, except transportation of household goods, by a motor carrier operating solely within the State of Hawaii. The State of Hawaii may regulate transportation exempt from jurisdiction under this section and, to the extent provided by a motor carrier operating solely within the State of Hawaii, transportation exempt under section 13503 of this title.