Transportation Studies

Central District Freeway Frontage Road Traffic Control Study

The Arizona Department of Transportation (ADOT) maintains and operates several freeway corridors in the Central District with parallel one-way frontage roads. These frontage roads offer local circulation/access as well as alternate capacity during mainline incidents. There are specific guidelines and standards regarding control of access in the area of freeway ramps and crossroads when frontage roads are present but there is little guidance on traffic control – specifically the use of yield versus stop-control versus no control on the frontage road approach to the junction point. Phoenix has several frontage roads along different various freeway segments and there are differences in traffic control due to geometry and traffic volume. A formalized study is warranted to establish some guidance for current conditions and future needs.

By establishing a set of guidelines based on traffic volume, lane configuration, sight distance, speeds, distance from the Off ramp/frontage road Junction to the cross street, crash history, and/or other factors, ADOT will have a more consistent application with which to make future decisions.

Nationwide Survey of Best Practices

Working Paper 1: Existing Conditions

The Arizona Ombudsman – Citizens Aide helps you resolve ongoing issues with State Agencies.

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 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 Las solicitudes deben hacerse lo más antes posible para asegurar que el Estado tenga la oportunidad de hacer los arreglos necesarios.