It shall be unlawful for any person to place
any building material upon any highway without a written permit.
It shall be unlawful for any person to encumber
at any time more than one-third of the roadway and all sidewalks and
gutters shall be kept clear and unobstructed and all rubbish shall
be removed promptly, from time to time, by the person to whom such
permit was issued. During the existence of any such obstruction, the
same shall be sufficiently marked by red lights or flares from sunset
to sunrise to protect the public.
Upon the expiration or revocation of such permit,
all materials deposited thereunder shall be removed and the highway
restored to its original condition within 48 hours.