The annual fee for the registration of any "specialized fuel driven motor vehicle" as defined in section 4 of this title and of motor buses as defined in section 3002 of this title, shall be one and three-quarters times the amount of the annual fee provided for a motor vehicle of the classification and weight under the terms of this chapter. (Amended 1981, No. 172 (Adj. Sess.), § 2; 1993, No. 212 (Adj. Sess.), § 7; 2007, No. 75, § 33.)