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  2. Speed limits in the United States - Wikipedia

    en.wikipedia.org/wiki/Speed_limits_in_the_United...

    The federal government enforced the national maximum speed limit by withholding federal funding for projects whose speed limits exceeded 55 miles per hour (89 km/h). Federal highway funding is normally allocated according to 23 U.S. Code § 106, [ 87 ] the National Maximum Speed Law (also known as H.R.11372 - An Act to conserve energy on the ...

  3. National Maximum Speed Law - Wikipedia

    en.wikipedia.org/wiki/National_Maximum_Speed_Law

    The National Maximum Speed Limit (NMSL) was a provision of the federal government of the United States 1974 Emergency Highway Energy Conservation Act that effectively prohibited speed limits higher than 55 miles per hour (89 km/h). The limit was increased to 65 miles per hour (105 km/h) in 1987. It was drafted in response to oil price spikes ...

  4. Federal-Aid Highway Act of 1973 - Wikipedia

    en.wikipedia.org/wiki/Federal-Aid_Highway_Act_of...

    The Federal-Aid Highway Act of 1973 (Public Law 93–87; 87 Stat. 250) is legislation enacted by the United States Congress and signed into law on August 13, 1973, which provided funding for existing interstate and new urban and rural primary and secondary roads in the United States. It also funded a highway safety improvement program, and ...

  5. Traffic law in the United States - Wikipedia

    en.wikipedia.org/wiki/Traffic_law_in_the_United...

    The maximum speed limit on rural two-lane roads ranges from 50 mph (80 km/h) in parts of the northeast to 75 mph (120 km/h) in parts of Texas. On rural Interstate Highways and other freeways, the speed limit ranges from 60 mph (96 km/h) in Hawaii to 85 mph (136 km/h) in parts of Texas. All roads in the United States have a speed limit, but it ...

  6. National Highway Traffic Safety Administration - Wikipedia

    en.wikipedia.org/wiki/National_Highway_Traffic...

    The National Highway Traffic Safety Administration (NHTSA / ˈnɪtsə / NITS-ə) [8] is an agency of the U.S. federal government, part of the Department of Transportation, focused on transportation safety in the United States. NHTSA is charged with writing and enforcing Federal Motor Vehicle Safety Standards as well as regulations for motor ...

  7. Speed limits in the United States by jurisdiction - Wikipedia

    en.wikipedia.org/wiki/Speed_limits_in_the_United...

    The rural default speed limit is 45 mph but may be increased to 50 mph (80 km/h). In residential areas, only multilane roads have limits up to 35 mph (56 km/h), other roads are restricted to a maximum speed of 25 mph (40 km/h). Only urban and rural school zones have limits up to 15 to 25 mph (24–40 km/h).

  8. Speed limit - Wikipedia

    en.wikipedia.org/wiki/Speed_limit

    Speed limits then propagated across the United States; by 1930 all but 12 states had established numerical limits. [13] In 1903, in the UK, the national speed limit was raised to 20 mph (32 km/h); however, as this was difficult to enforce due to the lack of speedometers, the 1930 "Road Traffic Act" abolished speed limits entirely. In 1934, a ...

  9. Federal-Aid Highway Act of 1956 - Wikipedia

    en.wikipedia.org/wiki/Federal-Aid_Highway_Act_of...

    The Federal-Aid Highway Act of 1956, also known as the National Interstate and Defense Highways Act, Pub. L. 84–627 was enacted on June 29, 1956, when President Dwight D. Eisenhower signed the bill into law. With an original authorization of $25 billion (equivalent to $215 billion in 2023) [1] for the construction of 41,000 miles (66,000 km ...