Class 39 4-31-3-1-3-2 February 13, 2026 39 4-31-3-1 This also was a period in which there was early recognition of the need for a federal role in urban mass transportation. 39 4-31-3-1@ This also was a period in which there was early recognition of the need for a federal role in urban mass transportation. この時期はまた、都市公共交通において連邦政府の役割（関与）の必要性が、早くから認知されていた。 39 4-31-3-2 This role, however, was to remain limited for a number of years to come. 39 4-31-3-2@ This role, however, was to remain limited for a number of years to come. ②しかしながら、この役割は、その後数年間にわたり（その後しばらくの間）、限定されたままであった。 Time's upTime is Up!
