22 Pa. Code § 23.31
The following words and terms, when used in this chapter, have the following meanings, unless the context clearly indicates otherwise:
Administrative unit-A school district, intermediate unit or area vocational technical school.
Age of a vehicle-The remainder determined by subtracting the year of manufacture of the chassis from the calendar year in which the school term of usage ends.
Approved annual mileage-The product of the approved daily mileage times the number of days in the school term on which transportation to and from school was provided on the designated vehicle.
Approved daily mileage-ileage which the vehicle travels daily in transporting pupils to and from school, as approved by the Department, but the number of miles approved without passengers shall not exceed the number of miles with passengers.
One-way trip fares-The agreed upon rate per pupil for a specified distance or area.
Utilized passenger capacity miles-The product of the utilized passenger capacity times the approved annual mileage of the vehicle in transportation of pupils to and from school.
Utilized passenger capacity of vehicle-The greatest number of pupils transported to or from school on a run. This figure may not exceed the approved passenger capacity of the vehicle. If the seating capacity of a vehicle is permanently reduced to accommodate transportation of certain exceptional pupils, the equivalent utilized capacity of the vehicle may be used in computing maximum allowable costs for reimbursement purposes upon submission of evidence justifying eligibility for the equalization being granted.
22 Pa. Code § 23.31