It is unlawful for a person to ride or use a skateboard, rollerskates or in-line skates (as such terms are defined in Visalia Municipal Code Section 10.44.010) in the skate park unless a person is wearing a helmet, elbow pads and knee pads and where the skate park has a sign posted that provides that anyone riding a skateboard or in-line skates in the skate park must wear a helmet, elbow pads and knee pads or be subject to citation. (Ord. 9919 § 1 (part), 1999)