(a) A directional sign may not be located within 2,000 feet of:
  (1) an interchange or intersection at grade along the interstate system or other primary system, as measured from the nearest point of the beginning, ending, or pavement widening at the exit from or entrance to the main-traveled way; or
  (2) a rest area, park, or scenic area.
(b) A directional sign may not:
  (1) obscure or otherwise interfere with the effectiveness of an official traffic sign, signal, or device;
  (2) obstruct or interfere with a driver's view of approaching, merging, or intersecting traffic;
  (3) be erected on a tree or painted or drawn on a rock or other natural feature; or
  (4) be located in a rest area, parkland, or scenic area.
(c) Two directional signs facing the same direction of travel may not be spaced less than one mile apart.
(d) Not more than three directional signs relating to the same attraction or activity and facing the same direction of travel may be erected along a single route approaching the attraction or activity.
(e) A directional sign located adjacent to the interstate highway system must be within 75 air miles of the attraction or activity. A sign located adjacent to the primary highway system must be within 50 air miles of the attraction or activity.

Source Note: The provisions of this §21.946 adopted to be effective July 1, 2011, 36 TexReg 2418