Federal Railroad Administration, Rail Regulation part 224:
Retroreflective sheeting applied pursuant to this part shall be yellow, fluorescent yellow, or white as specified by the chromaticity coordinates of ASTM International's Standard D 4956-04, "Standard Specification for Retroreflective Sheeting for Traffic Control."
- Retroreflective sheeting must be applied in strips 4" wide and 18" or 36" long
- Material can be applied either vertically or horizontally on freight cards only
Reflective Sheeting Rail Car Markings:
Click the link to view the complete Federal Railroad Administration ruling on the Reflectorization of Rolling Stock.