Weather signals on mail cars
15 U.S.C. § 318
in effectThe Secretary of Commerce, in cooperation with the United States Postal Service, may arrange a plan by which there shall be displayed on all cars and other conveyances used for transporting United States mail suitable flags or other signals to indicate weather forecasts, cold-wave warnings, frost warnings, and so forth, to be furnished by the Secretary.
Source: OLRC USLMURL: https://uscode.house.gov/download/releasepoints/us/pl/119/95/xml_usc15@119-95.zipFetched: 6/3/2026
