Idaho Code § 49-201B
Pursuant to federal law, the Idaho transportation department is hereby authorized to enter into reciprocal agreements with the regulatory agencies of other states having jurisdiction and authority over motor carriers to provide for base state agreements in which the registration of interstate carriers operating in participating states may be accomplished by registration in one (1) base state. Carriers electing to register under base state agreements shall be subject to the jurisdiction and authority of the Idaho transportation department to the same extent as they would if they did not participate in the base state agreement. The fees authorized by federal law, or such lesser fees as the participating states agree to, may be collected, and the base state may require further filings of certificates of insurance, surety bonds, et cetera, to show the carrier's qualifications to operate. Participating carriers shall register their authority directly with the transportation department and not with other state or local agencies.
Idaho Code § 49-201B