Cal. Public Utilities Code § 102122

(a) The board of directors may adopt ordinances that do any of the following: (1) Prohibit persons from knowingly giving false identification to a district employee engaged in the enforcement of district ordinances or state law, or otherwise obstructing the issuance of a citation for violation of district ordinances or state law. (2) Prohibit unauthorized operation of, interference with, entry into, climbing upon, attaching to, or loitering on or in, transit facilities or other transit property. (3) Prohibit the removal, displacement, injury, destruction, or obstruction of any part of any track, switch, turnout, bridge, culvert, or any other district structure or fixture. (4) Specify conditions under which a passenger may board a district vehicle with a bicycle and where the bicycle may be stowed. (b) The board may provide that a violation of any ordinance adopted pursuant to subdivision (a) is an infraction punishable by a fine not exceeding seventy-five dollars ($75), and that a violation by a person after the second conviction is punishable by a fine not to exceed two hundred fifty dollars ($250) and by community service for a total time not to exceed 48 hours over a period not to exceed 30 days which do not conflict with the violator’s hours of school attendance or employment. (c) This section does not prohibit any person from engaging in activities that are protected under the laws of the United States or of California, including, but not limited to, picketing, demonstrating, or distributing handbills. (d) A district employee may enforce any ordinance that is adopted pursuant to this section as provided in subdivision (e) of Section 830.14 of the Penal Code. (e) Nothing in this section shall affect any rights or immunities conferred pursuant to Section 836.5 of the Penal Code.