Va. Code Ann. § 58.1-2712.1

The Department may, with the approval of the Governor, enter into IFTA for interstate motor carriers and abide by the requirements set forth in IFTA. All motor carriers that operate one or more qualified highway vehicles on an interstate basis are subject to and shall abide by all terms and conditions of IFTA that are applicable to motor carriers or operators of qualified highway vehicles. All requirements of IFTA shall also apply to motor carriers operating in intrastate commerce unless specific requirements are determined by the Department to be not in the best interest of the motor carrier industry.