Sec. 541.102.  RESTRICTED DISTRICTS.  In this subtitle:
(1)  "Business district" means the territory adjacent to and including a highway if buildings used for business or industrial purposes, including a building used as a hotel, bank, office building, public building, or railroad station:
(A)  are located within a 600-foot segment along the highway;  and
(B)  within that segment the buildings occupy at least 300 feet of frontage:
(i)  on one side of the highway;  or
(ii)  collectively on both sides of the highway.
(2)  "Residence district" means the territory, other than a business district, adjacent to and including a highway, if at least 300 feet of the highway frontage is primarily improved with:
(A)  residences;  or
(B)  buildings used for business purposes and residences.
(3)  "Urban district" means the territory adjacent to and including a highway, if the territory:
(A)  is not in a municipality;  and
(B)  is improved with structures that are used for business, industry, or dwelling houses and located at intervals of less than 100 feet for a distance of at least one-quarter mile on either side of the highway.
Acts 1995, 74th Leg., ch. 165, Sec. 1, eff. Sept. 1, 1995.