49 C.F.R. § 218.21 Scope.
Title 49 - Transportation
This subpart prescribes minimum requirements for the protection of railroad employees engaged in the inspection, testing, repair, and servicing of rolling equipment whose activities require them to work on, under, or between such equipment and subjects them to the danger of personal injury posed by any movement of such equipment.
Title 49: Transportation
PART 218—RAILROAD OPERATING PRACTICES
Subpart B—Blue Signal Protection of Workers
§ 218.21 Scope.