(a) When registered with the Administration, every truck tractor or similar motor vehicle used for propelling, supporting, or drawing a trailer or semitrailer is a Class F (tractor) vehicle.
(b) For each Class F (tractor) vehicle, the annual registration fee is based on the maximum gross weight of the vehicle in combination with a trailer or semitrailer, as follows:
Maximum Gross Weight Fee (per 1,000 Pounds Limit (in Pounds) or Fraction Thereof) 40,000 (minimum) – 60,000 $21.00 60,001 – 80,000 or more $22.50