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  2. AASHO Road Test - Wikipedia

    en.wikipedia.org/wiki/AASHO_Road_Test

    The AASHO road test was to study the performance of pavement structures of known thickness under moving loads of known magnitude and frequency. [ citation needed ] The study was carried out from August 1956 to November 30, 1960 in Ottawa, Illinois [ 2 ] and has been used as a primary source of experimental data when vehicle wear to highways is ...

  3. Fourth power law - Wikipedia

    en.wikipedia.org/wiki/Fourth_power_law

    For this purpose, a test track was built in Ottawa, Illinois, which consisted of six loops, each with two lanes. The lanes were paved with both asphalt and concrete of varying thicknesses. In the two-year test, trucks with different axle loads then drove the roads almost continuously. The test was called the AASHO Road Test.

  4. (The Center Square) – Illinois is the only state that requires a behind-the-wheel driving test based on age, but that may soon change. Secretary of State Alexi Giannoulias said the Road Safety ...

  5. Vehicle inspection in the United States - Wikipedia

    en.wikipedia.org/wiki/Vehicle_inspection_in_the...

    Vehicle emissions inspection station in Wisconsin. Arizona – biennially, in Phoenix and Tucson metro areas only, depending on age and type of vehicle. [27]California – biennially for all vehicles from out-of-state, regardless of age; and all vehicles made after 1975 which are more than six years old in all or some zip codes in 41 out of 58 counties.

  6. Illinois Secretary of State wants to increase the driving ...

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  7. Illinois driver’s license quiz: How well do you know the ...

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