. For the purposes of this act, the following words and phrases shall have the meanings given to them in this section unless the context clearly indicates otherwise:
"Fireman." Any of the following:
"Participating county." A county that elects or bargains to participate in this act by posting a notice on the county's publicly accessible Internet website, which election shall be irrevocable after participation commences.
"Participating housing authority." A housing authority that elects or bargains to participate in this act by posting a notice on the housing authority's publicly accessible Internet website, which election shall be irrevocable after participation commences.
"Participating transit or port authority." A transit or port authority that elects or bargains to participate in this act by posting a notice on the transit or port authority's publicly accessible Internet website, which election shall be irrevocable after participation commences.
"Participating university." Any of the following that elects or bargains to participate in this act by posting a notice on the university's publicly accessible Internet website, which election shall be irrevocable after participation commences:
53 P.S. § 638.1