(a) This section applies only to a county with a population of:
(1) 2.8 million or more;
(2) 800,000 or more that is adjacent to a county with a population of 2.8 million or more;
(3) more than 550,000 and less than 620,000; or
(4) less than 75,000 that is adjacent to three counties with populations of more than 450,000.
(b) Except as provided by Subsection (b-1), and subject to the approval of the commissioners court, the board may adopt reasonable rules concerning the use of any park administered by the board.
(b-1) A board created for a county described by Subsection (a)(2) or (a)(4) may not adopt rules relating to the use of fireworks.
(c) A person who violates a rule approved by the commissioners court under Subsection (b) is liable to the county for a civil penalty of not more than $100 per violation. A county may bring suit in a district court or county court to recover a civil penalty authorized by this subsection.
(d) Fines collected under Subsection (c) shall be deposited in the county's general fund.