Managing Traffic in a Growing City

Published on June 27, 2024

Ever wondered what it takes to keep traffic in the city running smoothly despite our rapid growth? At the recent Planning and Zoning Commission meeting, Civil Engineer Stephen Kenna and engineering intern Wyatt Clark gave a behind-the-scenes look at Maricopa's traffic management strategies. From comprehensive Traffic Impact Analyses to regional coordination and long-range planning, these efforts pave the way for safer and more efficient roadways. Here are three takeaways that show how planning benefits our community. 

You can also watch the presentation in its entirety here:

 1. Comprehensive Traffic Impact Analysis for Every Development 

Every new development in Maricopa, whether it be a housing subdivision or a new business, must undergo a thorough Traffic Impact Analysis (TIA). These are detailed assessments looking at how many cars pass through a given intersection each day, how many trips are generated to and from a specific area and designs that account for safe and sufficient access to locations, and recommendations for traffic control improvements such as traffic signals or additional turn lanes. These calculations are based on national standards set by the Institute of Transportations Engineers, the Arizona Department of Transportation, and the Federal Highway Administration.  

For example, you may think an apartment complex equals more cars. However, it’s the opposite. Most apartments in Maricopa are 1-2 bedrooms, while single-family homes are 3-5 bedrooms and as a result will likely have more residents per dwelling unit. So, they are given a higher trip generation number than an apartment.  

“Even if not every bedroom is filled, or perhaps it is an older couple who is only in the house for part of the year, it is best to assume the most traffic-intense scenario when planning,” explains Steve Kenna, a civil engineer for the City of Maricopa. 

How This Impacts Our Community: 

• Informed Decision-Making: Professional traffic engineers provide critical data that helps the city make informed decisions about where to place traffic signals, stop signs, and other traffic safety and control devices that maintain smooth traffic flow.

 2. Integration with Regional Planning 

Maricopa is part of the Maricopa Association of Governments (MAG), a regional planning organization that includes cities, towns, Native nations, and counties across the Phoenix metropolitan area. MAG's Transportation Data Management System (TDM) allows Maricopa to access detailed traffic data and forecasts, which are crucial for regional transportation planning. This data goes beyond traditional car counts on a road and even looks at forecasted socioeconomic information such as population, households, employment, and more to determine a holistic look at transportation needs in an area.  

How This Impacts Our Community: 

• Regional Coordination: Maricopa's integration with MAG ensures that local traffic planning is aligned with regional transportation goals. This coordination helps prevent traffic issues that could arise from mismatched planning efforts across municipal boundaries. 

For example, roadways like the Maricopa – Casa Grande Highway, which crosses several jurisdictions, can be improved upon and maintained as a collective effort if one jurisdiction sees an increase in usage. In addition, the continuation of the Sonoran Desert Parkway and the plans for it to connect to the I-10 are being planned, designed, and constructed through collaboration between Maricopa, Pinal County, and Casa Grande.  

3. Long-Range Planning for Sustainable Growth 

The city's Area Transportation Plan (ATP) serves as a long-term roadmap for developing Maricopa's transportation infrastructure within our jurisdiction. This plan is updated every 5 to 7 years, with the next revision slated for 2025. It outlines the future development of streets, transit services, and pedestrian and bicycle facilities. The ATP considers projected economic growth and demographic changes to ensure that the city's transportation network can accommodate future needs. 

How This Impacts Our Community: 

• Proactive Infrastructure Development: By planning for future growth, the city can ensure that new infrastructure within city limits meets the needs of our residents. This proactive approach helps maintain a high quality of life for residents. 

The city's diligent approach to traffic management, involving detailed TIAs, regional coordination, and long-range planning, ensures that Maricopa can grow sustainably while maintaining smooth and safe traffic flow.