49 C.F.R. § 213.13 Measuring track not under load.
Title 49 - Transportation
When unloaded track is measured to determine compliance with requirements of this part, the amount of rail movement, if any, that occurs while the track is loaded must be added to the measurements of the unloaded track.
Title 49: Transportation
PART 213—TRACK SAFETY STANDARDS
Subpart A—General
§ 213.13 Measuring track not under load.
