23 C.F.R. § 750.103 Measurements of distance.
Title 23 - Highways
(a) 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. (b) All distances under §750.107 (a)(2) and (b) shall be measured along the centerline of the highway between two vertical planes which are normal or perpendicular to and intersect the centerline of the highway, and which pass through the termini of the measured distance. [38 FR 16044, June 20, 1973, as amended at 41 FR 9321, Mar. 4, 1976]
Title 23: Highways
PART 750—HIGHWAY BEAUTIFICATION
Subpart A—National Standards for Regulation by States of Outdoor Advertising Adjacent to the Interstate System Under the 1958 Bonus Program
§ 750.103 Measurements of distance.