October 30, 2017, 10am PDT
The new signals will respond to congestion in real time throughout the day.
September 14, 2017, 2pm PDT
A series of pieces from Sidewalk Labs examines the history and context of vital urban "innovations." So far, elevators, sewers, and traffic signals have been covered.
March 13, 2017, 12pm PDT
The networked sensors and signals in Ann Arbor give the city a coordinated way to respond to traffic.
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.
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.
June 9, 2014, 12pm PDT
A new installment of the BikePortland podcast reveals the technical considerations in the city’s signal system that contribute to bike and pedestrian safety.
October 17, 2013, 1pm PDT
Have you ever noticed that the image of little man (it's usually a man) in pedestrian traffic icons differs depending on which country you're in? Artist Maya Barkai has, and her new project seeks to explore what these guys say about their culture.
April 26, 2011, 12pm PDT
When communities feel like street traffic is unsafe, they usually demand stop signs or traffic lights to be installed. But studies show that those devices may actually make streets less safe.
August 31, 2009, 5am PDT
New solar road technology could both absorb solar energy for electricity and provide a changeable LED grid that could respond to traffic conditions.
June 28, 2008, 9am PDT
<p>Bohmte, Germany is following the lead of an EU program called "Shared Space", which recommends that cities remove traffic signals and find ways to encourage cars to share their space with pedestrians and bicyclists.</p>