(a) A sign may not be erected along a freeway or interstate regulated highway that is outside an incorporated municipality in an area that is adjacent to or within 1,000 feet of:
  (1) an interchange or intersection at grade; or
  (2) a rest area, ramp, or the highway's acceleration and deceleration lanes.
(b) The distance from a ramp or acceleration or deceleration lane is measured from the point of the pavement widening at the beginning of the entrance or exit ramp and from the point that the pavement widening ends at the conclusion of the entrance or exit ramp.
(c) The distance from a rest area is measured along the right of way line from the outer edges of the rest area boundary abutting the right of way.
(d) An area is adjacent to a rest area or a highway's acceleration or deceleration lane if the area is between the point of the highway widening at the beginning of the entrance or exit ramp and the point that pavement widening ends at the conclusion of the entrance or exit ramp.
(e) All measurements are taken from a point perpendicular to the highway and along the highway right or way.

Source Note: The provisions of this §21.185 adopted to be effective July 1, 2011, 36 TexReg 2418; amended to be effective March 14, 2018, 43 TexReg 1446