223.17—Identification of equipped locomotives, passenger cars and cabooses.

Each locomotive, passenger car and caboose that is fully equipped with glazing materials that meet the requirements of this part shall be stencilled on an interior wall as follows:

Code of Federal Regulations

“Fully Equipped FRA Part 223 glazing” or similar words conveying that meaning in letters at least 3/8 inch high.
[45 FR 49271, July 24, 1980]