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Wednesday, May 4, 2011

The Smoothness Factor



Nobody likes a bumpy ride.

In fact, ADOT goes to great lengths to make sure Arizona ’s roads are as smooth as possible…even when that means walking hundreds of miles of roadway!

To measure the smoothness of a road, ADOT uses a machine called a profilograph that surveys the road for any lumps, bumps or dips. (Recently it was used to identify any imperfections in the newest stretch of Loop 303 before it opens this month – see video above.)

Basically, a profilograph is a highly sophisticated computer system attached to a large metal frame, 12 small wheels and an ordinary bicycle tire. The entire contraption, which is 25-feet long and weighs about 350 pounds, is pushed by hand over the full stretch of a roadway several times to provide the road’s “smoothness factor.”

The bicycle tire, which simulates the travel of a vehicle, indicates to the computer any dip or bump in the road greater than 3/10 of an inch. The resulting data details each imperfection in the road letting the contractor know what areas they need to go back and either fill or grind down.
Posted by Angela DeWelles   |  Labels:  Loop-303, Profilograph, Video


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Civil RightsTitle VI of the Civil Rights Act of 1964, and the Americans with Disabilities Act (ADA)

Pursuant to Title VI of the Civil Rights Act of 1964, and the Americans with Disabilities Act (ADA), ADOT does not discriminate on the basis of race, color, national origin, age, sex or disability. Persons that require a reasonable accommodation based on language or disability should contact ADOT’s Civil Rights Office at 602.712.8946 or at [email protected]. Requests should be made as early as possible to ensure the State has an opportunity to address the accommodation.

De acuerdo con el título VI de la Ley de Derechos Civiles de 1964 y la Ley de Estadounidenses con Discapacidades (ADA por sus siglas en inglés), el Departamento de Transporte de Arizona (ADOT por sus siglas en inglés) no discrimina por raza, color, nacionalidad, edad, género o discapacidad.  Personas que requieren asistencia (dentro de lo razonable) ya sea por el idioma o por discapacidad deben ponerse en contacto con la Oficina de Derechos Civiles al 602.712.8946 o en [email protected]. Las solicitudes deben hacerse lo más pronto posible para asegurar que el equipo encargado del proyecto tenga la oportunidad de hacer los arreglos necesarios.