Distance from the edge of a right-of-way shall be measured horizontally along a line normal or perpendicular to the centerline of the highway.
Ga. Comp. R. & Regs. R. 672-8-.04
Ga. L. 1973, pp. 947, 1069 as amended (Ga. Code of Public Transportation, § 95A-908); Ga. L. 1973, pp. 947, 982 (Ga. Code of Public Transportation, § 95A-303).