N.Y. ADC. LAW § 18-105.1 : NY Code - Section 18-105.1: Trees, bushes and other vegetation obstructing a traffic signal or device

a. Definitions. For  purposes  of  this  section,  the  following terms shall have the following meanings:
    1.  "Traffic  control signal" shall mean any such signal as defined in
  section 154 of the vehicle and traffic law.
    2. "Select traffic control device" shall mean  any  stop  sign,  yield
  sign or do not enter sign.
    3.  "Traffic  control device" shall mean any traffic control device as
  defined in section 153 of the vehicle and  traffic  law,  other  than  a
  select traffic control device.
    b.  The  department  shall  inspect  any  location within four days of
  receiving notice that any traffic control signal, select traffic control
  device or traffic control device at such  location  is  not  visible  or
  legible  to  a  motorist  who must obey or rely upon such sign due to an
  obstruction by a tree, bush or other vegetation or any portion thereof.
    c. The department shall within ten days  of  the  inspection  required
  pursuant  to  subdivision  b of this section prune or cause to be pruned
  any tree, bush or other vegetation found to require pruning  because  it
  obstructs  any  select traffic control device or traffic control signal;
  provided  that  the  department  shall  prioritize  such   pruning   the
  department determines is most immediately needed to correct a hazard.
    d.  The department shall within twenty days of the inspection required
  pursuant to subdivision b of this section prune or cause  to  be  pruned
  any  tree,  bush or other vegetation found to require pruning because it
  obstructs any traffic control device.
    e. The department shall maintain a log of  all  notices  of  the  type
  described  in  subdivision b of this section. Such log shall include the
  date and time such notice was received, the date and time on which  such
  location  was  inspected,  and the date and time when such tree, bush or
  other vegetation was pruned or the date and time of a determination that
  such tree,  bush  or  other  vegetation  did  not  require  pruning,  as
  applicable.