As used in this subpart:

1. (1) “Rural” means those areas outside the city limits of incorporated cities or towns with a population of five thousand (5,000) or more people;

2. (2)

   1. (A) “State highway” means the National Highway System and the five thousand two hundred fifty (5,250) miles of state highways subject to federal and state highway beautification acts as of June 1, 1991.
   2. (B) “State highway” does not include the interstate or freeway highway systems, both of which are eligible for the Logo Signing Program;
3. (3) “Tourist-oriented directional signs”, hereafter referred to as “TODS”, means official signs that are located within the right-of-way of a state highway giving specific information regarding activities or sites of reasonable interest to the traveling public not residing in the immediate area of the business or activity; and
4. (4) “Trailblazer sign” means a sign that must be installed at an intersection where the motorist must change directions in order to reach the tourist activity.