November 15, 2016, 1pm PST
After completing an eight-year study of traffic collisions, the Seattle Department of Transportation realized that one way to immediately improve traffic safety would be to improve signalization an key intersections.
April 12, 2016, 9am PDT
An MIT study determined that traffic lights, and their inefficiencies, could be eliminated if all vehicles were equipped to regulate their speed and "batch" together as they approach intersections.
August 7, 2015, 6am PDT
If you opened Google to do a search on Wednesday, you'd see an image (the "doodle") of a traffic light and six Model-T era cars spelling out the company's name. It was honoring the 101-year anniversary of the birth of the electric traffic light.
May 7, 2015, 1pm PDT
Certain intersections stand to gain from losing their traffic lights. According to this study, cities can save money and improve safety by uninstalling signals in low-traffic zones.
April 24, 2015, 8am PDT
A suburban city in the East Bay Area will allow commuters to use a new app that links their smartphones to traffic lights.
June 24, 2014, 2pm PDT
Dan Saffer asks us to consider the traffic light—and there's plenty to think about.
March 25, 2013, 6am PDT
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.
October 8, 2011, 1pm PDT
A new system using "microwave motion" sensors can detect when a bicyclist enters an intersection and control traffic to accommodate them.
May 23, 2011, 8am PDT
Can drivers be scared into being more careful around pedestrians? A new scare tactic is in the works for the common WALK/DON'T WALK traffic light.
January 11, 2011, 11am PST
Metro stations, train stations and streetcar systems have distinct ways of showing how to get from one area to another. TheCityFix's Jonna McKone looks at mass transit systems from Mexico City to Paris and the visual representations used in each one.
January 3, 2011, 8am PST
The common traffic light isn't normally thought of as a problem. But what if you were colorblind? That's just one aspect of these eight proposals for a rethinking of the traffic light, gathered by WebUrbanist.
September 21, 2010, 12pm PDT
Do traffic signals need to be predictable? Researchers are experimenting with giving traffic lights a mind of their own, with the power to change with the flow of traffic, sensing when it would be most advantageous to be red or green.
September 21, 2010, 9am PDT
Researchers in Europe are experimenting with a new kind of traffic light that better responds to traffic by monitoring the actual amount of cars on the road and estimating how long lights should stay green.
June 18, 2010, 11am PDT
Architect Arrol Gellner says that traffic engineers use traffic lights far too often when a simple stop sign works better and is much less expensive.
Daily Journal of Commerce
June 7, 2010, 11am PDT
BMW and Audi are studying ways to improve fuel efficiency using strategies that outside of the vehicle.
December 7, 2009, 8am PST
Designer Damjan Stanković has proposed a stoplight with a "progress bar," the same sort of countdown that many walk signals have today. Zach Patton wonders if this is a good idea.
May 4, 2009, 2pm PDT
The Town Council of Ealing, U.K. is experimenting with covering up its traffic lights at certain intersections, which they believe will increase safety and awareness.
February 1, 2009, 11am PST
SF Streetsblog looks at cities that have timed traffic lights on busy bike streets to best suit their pace, and argues that Valencia St. in San Francisco is a prime candidate for retiming. (VIDEO)
November 25, 2008, 1pm PST
Want to give your city a unique look? Try these new square traffic lights.