Section 1230. Effect of regulations

(a)  The parent of any child and the
  guardian of any ward shall not authorize or knowingly  permit  any  such
  child or ward to violate any of the provisions of this article.
    (b)  These  regulations  applicable  to  bicycles or to in-line skates
  shall apply whenever a bicycle is, or in-line skates are, operated  upon
  any highway, upon private roads open to public motor vehicle traffic and
  upon  any  path  set aside for the exclusive use of bicycles, or in-line
  skates, or both.