In this subtitle the following words have the meanings indicated. “High–rise building” means a building for human occupancy that is: four or more stories above grade level; or over 45 feet in height. “High–rise building” does not include: a structure or building used exclusively for open air parking; or a building used exclusively for agricultural purposes. “Local fire department” means a career or volunteer fire department. “Mobility impaired” means unable to carry objects or to move or travel without the use of an assistive device or service animal. “Public way” means a paved thoroughfare over 21 feet in width that: is located on privately owned and privately maintained property but is designated for public use; or is publicly owned and publicly maintained.