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The Selective Enforcement Motorcycle Squad (SEMS) is a unit that addresses neighborhood traffic safety concerns in conjunction with the City of Tempe Transportation Division, and the City of Tempe Neighborhood Office.

The SEMS officers address neighborhood traffic concerns to assist residents in improving the quality of life in neighborhoods with respect to traffic safety. The primary technique the SEMS unit will use to accomplish this goal, is traffic enforcement. This enforcement will typically be one or more motorcycle officers monitoring the traffic, and writing citations for traffic violations.


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The SEMS Unit may also employ education as a tool to reduce traffic violations. Education can come in many forms to include meeting with neighborhood groups, making personal contact on traffic stops, and being highly visible in those areas of concern.

The best way to contact the SEMS Unit regarding a concern in your neighborhood, is to fill out the on-line Neighborhood Concern Form and an officer will be in touch with you. Otherwise, you can call 480-858-SEMS(7367) and leave a message.

If your concerns are related to anything listed below, please contact Transportation Maintenance at 480-350-8219.

  • Maintenance of City Streets, Alleys, sidewalks, storm drains, traffic signals, street and pathway lighting, street signs, roadway striping, or right or way maintenance.

If your concerns are related to anything listed below, please contact Traffic Engineering at 480-350-8219:

  • Design of Signage, and pavement markings throughout the city. This group also administers traffic control calming program, as well as barricading and traffic control projects.