(a) In this subchapter:
(1) “Cargo handling equipment” means any heavy-duty non-road, self-propelled vehicle or land-based equipment used at a seaport or rail yard to lift or move cargo, such as containerized, bulk, or break-bulk goods.
(2) “Drayage truck” means a heavy-duty on-road or non-road vehicle that is used for drayage activities and that operates in or transgresses through a seaport or rail yard for the purpose of loading, unloading, or transporting cargo, including transporting empty containers and chassis.
(3) “Repower” means to replace an old engine powering a vehicle with a new engine, a used engine, a remanufactured engine, or electric motors, drives, or fuel cells.
(b) The commission may include more specific definitions in the rules or guidelines developed to implement the program established by this subchapter in order to reduce emissions in and around seaports in a nonattainment area.