The limitations on signs set forth in this article shall not
apply to any sign or directional device erected by the federal, state,
county or Township government, or agency thereof, nor to any "no trespassing"
sign erected in accordance with the applicable statutes of the State
of New Jersey.
The limitations on sign areas as set forth in this section for
the commercial and industrial districts shall not apply to parking
lot markers, directional signs and entrance and exit signs which are
erected two square feet in area and do not contain any advertising
of the use on the premises, and further provided that the number and
location of such signs are approved by the Planning Board.