Railroads shall display the proper American Association of Railroads/Federal Department of Transportation (AAR/DOT) number at every railroad overpass, underpass, and at-grade crossing.
Okla. Admin. Code § 165:32-3-7
Railroads shall display the proper American Association of Railroads/Federal Department of Transportation (AAR/DOT) number at every railroad overpass, underpass, and at-grade crossing.
Okla. Admin. Code § 165:32-3-7