If an agent cannot be served because the agent cannot be located, has ceased to exist or does not receive correctly addressed mail, service may be made by posting the notice or process in the Office of the Secretary of Transportation.
source: 33 FR 19700, Dec. 25, 1968, unless otherwise noted. Redesignated at 35 FR 5118, Mar. 26, 1970.
cite as: 49 CFR 551.68