No person shall knowingly or willfully drive any vehicle upon any portion of any sidewalk or approach thereto while said sidewalk or approach is in the process of being improved or upon any portion of any completed sidewalk or approach thereto, or shall remove or destroy any part or all of any sidewalk or approach thereto, or shall remove, destroy, mar or deface any sidewalk at any time or destroy, mar, remove or deface any notice provided by this chapter.  (Ord. S-30306, 1976).