History: Highway crew covers a 70 mph sign with a 55mph sign in response to the National Maximum Speed Law in 1974 [UnitedStates, 900 × 791]

https://i.imgur.com/maZGepz.png via /r/HistoryPorn https://www.reddit.com/r/HistoryPorn/comments/dlm2f4/highway_crew_covers_a_70_mph_sign_with_a_55mph/?utm_source=ifttt