The Federal-Aid Highway Amendments of 1974 was signed into law by President of the United States Gerald Ford on January 4, 1975.^[1] Among other changes, the law permanently implemented a national 55-mph speed limit (which had already been a temporary limit) for the Interstate Highway System. It also established the Federal Bridge Gross Weight Formula as law, which governed the weight-to-length ratio of trucks in order to protect highway bridges and infrastructure.

[edit] See also

• Federal-Aid Highway Act
• Speed limits in the United States

[edit] References

v • d • e Major highway federal statutes in the United States Federal-Aid Highway Acts (1916–1987) · National Interstate and Defense Highways Act (1956) · Surface Transportation and Uniform Relocation Assistance Act (1987) · Intermodal Surface Transportation Efficiency Act (1991) · National Highway Designation Act (1995) · Transportation Equity Act for the 21st Century (1998) · Safe, Accountable, Flexible, Efficient Transportation Equity Act: A Legacy for Users (2005)

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