What traffic problems was Phoenix, AZ facing before using NoTraffic’s platform?

Phoenix experienced severe issues with red-light running, long commute times, and pedestrian delays, particularly along major corridors like Glendale Avenue. These problems led to safety concerns and increased emissions from idling vehicles.

What solution did Phoenix implement to improve traffic safety and flow?

Phoenix deployed NoTraffic’s AI Mobility Platform, a real-time, adaptive traffic signal system that dynamically adjusts signal timing based on live traffic data. This replaced outdated fixed-time signal control systems.

What are the key benefits Phoenix saw from using NoTraffic’s AI traffic platform?

The city recorded impressive improvements: 70% reduction in red-light running incidents 29% shorter PM peak commute times 17% reduction in pedestrian delays 13% reduction in AM peak delays CO₂ emissions reduced by nearly 1,000 metric tons annually

How does NoTraffic’s platform work in urban traffic environments?

NoTraffic’s system uses AI to analyze traffic in real-time and adapt signal timing accordingly. It evaluates multiple traffic scenarios per second to reduce vehicle delay, improve pedestrian safety, and cut down on emissions.

How did the platform improve pedestrian safety in Phoenix?

Pedestrian delay times were reduced by 17%, leading to shorter wait times and a lower likelihood of unsafe crossings, enhancing safety for Vulnerable Road Users (VRUs).

What environmental impact did the traffic optimization have in Phoenix?

The improved traffic flow reduced idling and stop-and-go traffic, resulting in CO₂ reductions equivalent to removing over 200 cars from the road—almost 1,000 metric tons of CO₂ saved annually.

Why was Glendale Avenue chosen for NoTraffic’s deployment?

Glendale Avenue was identified as one of Phoenix’s most problematic corridors, with frequent delays and safety issues. It was selected for targeted optimization to test the effectiveness of AI-driven traffic control.

Back to all resources

Phoenix, AZ: A Leap Forward in Traffic Safety

Author: Notraffic

Case Studies Mar 12, 2025

Overview

The Challenge for Phoenix, Arizona

As the fifth most populous city in the U.S., Phoenix serves over 1.7 million residents who contend daily with significant traffic safety and congestion issues. To tackle these challenges and enhance urban mobility, the city launched the Phoenix Transportation 2050 initiative—a comprehensive, multi-year plan to transform city-wide street and transit efficiency.

Three key metrics for Phoenix optimization:
• 29% Reduced Afternoon Commutes
• 70% Reduction in Red Light Running
• 17% Reduction in Pedestrian Delay

Location

Phoenix, Arizona

Population

1,500,000+

About

NoTraffic’s deployment in Phoenix represents a transformative step forward in urban traffic management. By reducing red-light running by 70%, lowering delays, and dramatically improving emissions , NoTraffic’s platform proves that optimization technology can make intersections safer, faster, and cleaner.

In a strategic move to address one of the city’s most problematic corridors, Glendale Ave, Phoenix deployed NoTraffic’s AI Mobility Platform. The results highlight significant improvements across multiple dimensions, delivering tangible benefits to residents, pedestrians, and the environment..

Result: Advancements in Safety, Efficiency, and Environmental Impact

By replacing traditional, fixed-time traffic control with dynamic, data-driven technology, NoTraffic’s system adapts signal timing in real-time to optimize intersection performance. The results reveal substantial gains in safety, traffic flow, and environmental sustainability:

Reduced Delay Times: PM peak delay times dropped by up to 29%, and AM rush hour delays fell by 13%, easing daily commutes for thousands of drivers while minimizing emissions from idling vehicles.
Improved Pedestrian Safety: Pedestrian delay times decreased by 17%, reducing wait times and the likelihood of unsafe crossings.
Enhanced Intersection Safety: Red-light running incidents decreased by an impressive 70%, significantly improving overall intersection safety.
Lower Environmental Impact: The improved traffic flow reduces emissions, with CO₂ reductions equivalent to removing over 200 vehicles from the road each year—saving nearly 1,000 metric tons of CO₂ annually.

These measurable outcomes showcase the agency’s transformative impact on the community and the environment.

Metric	Improvement (%)
Control Delay	10%
Pedestrian Delay	17%
AM Peak Delay	13%
PM Peak Delay	29%
Red-Light Running Reduction (RLR)	70%

Conclusion: A Leap Forward in Traffic Safety

NoTraffic’s system has enabled shorter commutes, safer pedestrian crossings, and better air quality for Phoenix residents. These everyday improvements reflect the platform’s power in helping agencies resolve even their most problematic streets.

NoTraffic’s deployment in Phoenix represents a transformative step forward in urban traffic management. By reducing red-light running by 70%, lowering delays, and dramatically improving emissions, NoTraffic’s platform proves that AI-driven technology can make intersections safer, faster, and cleaner.