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Samples in periodicals archive:
Some 45 years ago, tests conducted under the auspices of the American Association of State Highway Officials led to promulgation of the fourth power law, which states that, as the weight bearing on a moving axle increases, the impact on the highway underneath increases to the power of four.
Association of Highway Builders of the North Atlantic States, the American Association of State Highway Officials, the American Concrete Paving Association, the American Road Builders Association, and the American Automobile Association (AAA)--and those are just the groups with "American" in the title.
Even in the early stages of widespread automobile use, the American Association of State Highway Officials (AASHO), an organization of all the state departments of transportation, saw the necessity for organized standards of rural traffic markers.