Performance Measures

There are a number of performance measurement resources that have been developed in the MAG Region. In 2003, the MAG Region began to take a look at performance measures as a whole regional picture by leveraging the data that each individual agency collected internally. MAG developed a Regional Concept for Transportation Operations (RCTO) which shaped the vision and mission of what coordinated transportation operations would mean for the MAG Region. This included individual local agency 'functions' within the context of a systemwide operational structure. Performance measures were identified to enable the Region to quantify how well the operations initiatives outlined in the RCTO are working. These can be found in Section 5 of the RCTO. Located on the website under the Intelligent Transportation Systems Program webpage. The MAG RCTO is provided at this link: MAG also developed an interactive website to track system performance based on the RCTO. A link to this website is provided here:

In 2011, AZTechTM initiated a collection of performance measures for the Phoenix metropolitan area as part of the Arizona Operations Action Plan. The collection includes performance of the freeway management system, arterial operations, safety measures, incident management, traveler information, and transit management in the Phoenix metropolitan area. This Traffic Management Performance Measure Book completed for the calendar year 2011 will be published and provided online in early 2012.

MAG currently has an online Transportation Data Management System tool that is accessible via their website under Transportation at the following link: This tool provides a comprehensive search for traffic counts, turning movement counts, travel times, and project management information as well as performance measurement reports. The performance measurement system in specific provides the following information:

  • Modes of Travel: arterial performance, bicycle/pedestrian performance, limited access highway and high occupancy vehicle (HOV) lane performance, and transit performance
  • Categories: access and mobility measures, quality of life measures, safety measures, system accessibility and modal options measures, travel time/travel time variability/delay measures
  • Performance Measures: specified for each model of travel
  • Time Period: general time periods of AM peak, annual, daily, midday, PM peak

The following tables below provide information that was collected as part of the survey related to performance measures in the MAG Region.

System Performance Data Captured for Internal Use

Arterial performance monitoring is currently occurring on a limited basis, but is expected to increase over time. For those agencies that do collect data to monitor performance, travel times are the primary data and measures analyzed.

Agency NameData Being CollectedFrequency
Gilbert, Town ofTravel Times for Certain CorridorsEvery 1 to 2 years
Glendale, City ofTravel times are collected as needed for before and after corridor signal timing changes are implementedAs needed
Maricopa County DOTTravel time (before and after studies)Varies
Mesa, City ofCountsdaily
Peoria, City ofTraffic Movement Counts and Average Daily Traffic Counts3 years to cover the entire city
Scottsdale, City ofNumber of citizen calls, signal timing changes, DMS usage, media alerts, top 5 intersections for timing changes per monthMonthly
Surprise, City ofNetwork equipment statusReal-time

Benefits Experienced By ITS/Traffic Operations Program
Benefit# of Responses% of Total Responses
Delay savings6 40 %
Reduced accidents2 13 %
Reduced incident response time8 53 %
Reduced travel times7 47 %
Reduced emissions4 27 %
Increased travel time reliability0 0 %