Can Intelligent Traffic Lights Ease Toronto's Gridlock?

Faced with paralyzing gridlock, North America's fourth-largest city is studying several potential solutions for easing congestion - including traffic lights that think for themselves.

1 minute read

March 25, 2013, 6:00 AM PDT

By Jonathan Nettler @nettsj


Oliver Moore looks at some of the potential solutions, technical and behavioral, for easing Toronto's $6-billion gridlock problem, which is among the worst in North America. One such solution is University of Toronto professor Baher Abdulhai’s intelligent traffic light project, which "marries cameras with computers to create traffic lights that can measure vehicle flow, understand what it means, and adapt signal patterns to reduce gridlock."

"Of course, traffic isn’t all bad," adds Moore. “Some congestion is a sign of vibrancy,” says Prof. Abdulhai in the draft of an upcoming report for the Residential and Civil Construction Alliance of Ontario, “but too [much] congestion has many negative consequences. … The good news is that there are plenty of approaches to address congestion, traditional and non-traditional, technical and non-technical.”

"No major city is free from traffic problems, and urban planners say that the situation, while frustrating, is a sign of a healthy community," says Moore. "So along with all the congestion-busting ideas, the necessary final ingredient may be a different public attitude – a change in what we consider acceptable."

Saturday, March 23, 2013 in The Globe and Mail

portrait of professional woman

I love the variety of courses, many practical, and all richly illustrated. They have inspired many ideas that I've applied in practice, and in my own teaching. Mary G., Urban Planner

I love the variety of courses, many practical, and all richly illustrated. They have inspired many ideas that I've applied in practice, and in my own teaching.

Mary G., Urban Planner

Get top-rated, practical training

Aerial view of single-family homes with swimming pools in San Diego, California.

San Diego to Rescind Multi-Unit ADU Rule

The city wants to close a loophole that allowed developers to build apartment buildings on single-family lots as ADUs.

March 9, 2025 - Axios

Aerial view of suburban housing near Las Vegas, Nevada.

HUD Announces Plan to Build Housing on Public Lands

The agency will identify federally owned parcels appropriate for housing development and streamline the regulatory process to lease or transfer land to housing authorities and nonprofit developers.

March 17, 2025 - The Wall Street Journal

Canadian flag in foreground with blurred Canadian Parliament building in background in Ottawa, Ontario, Canada.

Has President Trump Met His Match?

Doug Ford, the no-nonsense premier of Canada's most populous province, Ontario, is taking on Trump where it hurts — making American energy more expensive.

March 11, 2025 - Toronto Star

Light rail train passing under apartments in Pasadena, California

California Bill Aims to Boost TOD

A bill proposed by Sen. Scott Wiener would exempt transit agencies from zoning rules near ‘high-quality’ transit stops and allow denser transit-oriented development.

4 hours ago - Streetsblog California

People walking at Pike Place Market, Seattle.

Report: One-Fifth of Seattle Households Are Car-Free

According to one local writer, the city’s low rate of car ownership should encourage officials to support public transit and reduce parking minimums.

5 hours ago - Seattle Bike Blog

Snow geese at the Sacramento National Wildlife Refuge, California

California Lawmakers Move to Protect Waterways

Anticipating that the Trump EPA will reinstate a 2017 policy that excluded seasonal wetlands and waterways from environmental protections.

6 hours ago - CALmatters

Urban Design for Planners 1: Software Tools

This six-course series explores essential urban design concepts using open source software and equips planners with the tools they need to participate fully in the urban design process.

Planning for Universal Design

Learn the tools for implementing Universal Design in planning regulations.