In this subtitle, the following terms have the meanings indicated. Terms Defined. “Administration” means the Motor Vehicle Administration. “Average actual gross vehicle weight” means the sum of the average chassis weight, plus average body weight, plus 150 pounds for the driver's weight, plus the total seated pupil weight, based on 120 pounds per pupil. “Body-on-chassis type” means a vehicle constructed by mounting a vehicle body on a truck or other specific designed chassis. “Gross axle weight rating (GAWR)” means the value specified by the vehicle manufacturer as the load carrying capacity of a single axle system measured at the tire ground interfaces. “Gross vehicle weight rating (GAWR)” means the value specified by the manufacturer as the loaded weight of a single vehicle. “Integral bus type” means a vehicle manufactured as an integral unit and not constructed as a separate body and chassis. “Nonflexible exhaust pipe” means a solid exhaust pipe or a bendable ripple exhaust pipe with welded seams. “Recommended chassis manufacturer's rated gross vehicle weight” means the weight assigned to the complete vehicle. “Residential special education vehicles” means school vehicles that transport pupils who live on campus. “School vehicle alternately flashing signal lamps” are: Amber signal lamps mounted horizontally in the front and rear of the school vehicle which are intended to identify a vehicle as a school vehicle and to inform other highway users that the vehicle is about to stop on the highway to board or discharge school children; Red signal lamps mounted horizontally in the front and rear of the school vehicle which are intended to identify a vehicle as a school vehicle and to inform other highway users that the vehicle is stopped on the highway to board or discharge school children. Type I School Vehicle. “Type I school vehicle” means a school vehicle that: Is designed and constructed to carry passengers; Is either of the body-on-chassis type construction or integral type construction; and Has a GVW of more than 15,000 pounds and provides a minimum of 13 inches of seating space per passenger. “Type I school vehicle” does not include any vehicle operated by a common carrier under the jurisdiction of a state, regional, or federal regulatory agency or operated by the agency itself. “Type II school vehicle” means a school vehicle that: Is designed and constructed to carry passengers; Is either of the body-on-chassis type construction or integral type construction; and Has a GVW of 15,000 pounds or less and provides a minimum of 13 inches of seating space per passenger. Transportation Article, §§12-104(b) and 25-110, Annotated Code of Maryland Effective date: April 17, 1981 (8:8 Md. R. 722) Regulation .05 amended effective June 3, 1985 (12:11 Md. R. 1050) Regulations .01—.09 repealed and new Regulation .01 adopted effective June 1, 1987 (14:11 Md. R. 1260) Regulation .01 amended effective June 27, 1988 (15:13 Md. R. 1557); December 15, 1997 (24:25 Md. R. 1719); April 2, 2001 (28:06 Md. R. 621)