A. Except as provided in subsection B, every motor carrier shall pay a road tax per gallon equivalent to the cents per gallon credit for diesel fuel as determined under subsection A of § 58.1-2706 for the relevant period plus an additional $0.035 per gallon calculated on the amount of motor fuel, diesel fuel or liquefied gases (which would not exist as liquids at a temperature of 60 degrees Fahrenheit and a pressure of 14.7 pounds per square inch absolute), used in its operations within the Commonwealth The tax imposed by this chapter shall be in addition to all other taxes of whatever character imposed on a motor carrier by any other provision of law.
B. In lieu of the tax imposed in subsection A, motor carriers registering qualified highway vehicles that are not registered under the International Registration Plan shall pay a fee of $150 per year for each qualified highway vehicle regardless of whether such vehicle will be included on the motor carrier’s IFTA return. The fee is due and payable when the vehicle registration fees are paid pursuant to the provisions of Article 7 (§ 46.2-685 et seq.) of Chapter 6 of Title 46.2. If a vehicle becomes a qualified highway vehicle before the end of its registration period, the fee due at the time the vehicle becomes a qualified highway vehicle shall be prorated monthly to the registration expiration month. Fees paid under this subsection shall not be refunded unless a full refund of the registration fee paid is authorized by law.
C. All taxes and fees paid under the provisions of this chapter shall be credited to the Highway Maintenance and Operating Fund established pursuant to § 33.2-1530, a special fund within the Commonwealth Transportation Fund.