Operational and Traffic Safety

Crash Modification Factors Clearinghouse

A crash modification factor (CMF) is a factor used to compute the expected number of crashes after implementing a given countermeasure at a specific site. It is defined as the ratio of expected crash frequency with improvement over that without improvement. The CMF Clearinghouse contains a web-based database of CMFs along with supporting documentation to help transportation engineers identify the most appropriate countermeasure for their safety needs. The CMF Clearinghouse compiles documented CMFs in a central location and provides a searchable database that can be easily queried to identify CMFs to meet a user's needs. Using the site, you can search to find CMFs or submit your own CMFs to be included in the clearinghouse. The CMF Clearinghouse is maintained by the UNC Highway Safety Research Center with funding from the Federal Highway Administration.

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Civil Rights

Pursuant to Title VI of the Civil Rights Act of 1964, the Americans with Disabilities Act (ADA) and other nondiscrimination laws and authorities, ADOT does not discriminate on the basis of race, color, national origin, sex, age, or disability. Persons that require a reasonable accommodation based on language or disability should contact ADOT’s Civil Rights Office at civilrightsoffice@azdot.gov. 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, la Ley de Estadounidenses con Discapacidades (ADA por sus siglas en inglés) y otras normas y leyes antidiscriminatorias, el Departamento de Transporte de Arizona (ADOT) no discrimina por motivos de raza, color, origen nacional, sexo, edad o discapacidad. Las personas que requieran asistencia (dentro de lo razonable) ya sea por el idioma o discapacidad deben ponerse en contacto con la Oficina de Derechos Civiles de ADOT en civilrightsoffice@azdot.gov. Las solicitudes deben hacerse lo más antes posible para asegurar que el Estado tenga la oportunidad de hacer los arreglos necesarios.