Canada Replaces Traffic Lights With Roundabouts

Canada tries out traffic roundabouts in an effort to reduce traffic in some of the country's busiest areas. Some cities are reluctant to replace traffic lights with roundabouts because of safety concerns.

1 minute read

December 3, 2006, 1:00 PM PST

By Nate Berg


"The new vogue for roundabouts follows intensive study by Canadian traffic engineers of their adoption south of the border. They concluded that roundabouts produced less congestion, fewer serious accidents and lower emissions. Best of all, unlike lights, they work even when the power grid fails."

"Quebec is enthusiastic, issuing guidelines in 2002 for proper construction of le carrefour giratoire; it now has about 80 roundabouts. In Ontario the Waterloo region (which includes Cambridge) is a pioneer, but the provincial government worries about pedestrian safety."

Thursday, November 9, 2006 in The Economist

Young Professional

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 and Environmental 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 and Environmental Planner

Get top-rated, practical training for planners

"Planetizen federal action tracker" logo superimposed over black and white image of US Capitol dome.

Planetizen Federal Action Tracker

A weekly monitor of how Trump’s orders and actions are impacting planners and planning in America.

October 14, 2026 - Zachary Whalen

Cars driving under automatic congestion pricing toll machines on Broadway next to the Trump International Hotel in Manhattan, New York City.

Data reveals that NYC’s bet on congestion pricing has paid off

After almost two years of the program, reports show positive impacts on traffic and air quality and no disruptions to parking.

October 13, 2026 - Marcelo Remond

A crane lifts a manufactured house, with is rectangular and does not yet have a roof.

HUD modernizes 50-year-old manufactured housing framework

The Next Generation Manufactured Housing Action Plan establishes new energy-efficiency standards for manufactured homes, and new guidelines for anchoring them.

October 8, 2026 - Boston Real Estate Times

A rendering of Meta's proposed data center. We see the large gray buildings from above.

New Mexico spent millions drafting climate goals. Data centers are unraveling them

Three data centers in New Mexico and El Paso will release more emissions yearly than 2 million cars in the same timeframe.

45 minutes ago - El Paso Matters

An aerial view of Dayton with a river and many trees visible

This Ohio town is using AI to speed up transit analysis

The Greater Dayton Regional Transit Authority’s new AI tool correctly determined riders’ preferred ways to reach key commuter routes.

1 hour ago - Cities Today

Tourists admiring the Seattle skyline.

Yet again, Seattle’s density zoning update is hit with delays

The city must now examine the ‘maximum possible development’ under a future zoning scenario, rather than the ‘maximum likely development.’

2 hours ago - The Urbanist