Lights synchronized to ease jams might be making matters worse. Rush-hour traffic might flow better if lights were set at random.
Ideally, traffic lights are set so that each changes to green just as a typical vehicle approaches from the previous set of lights... But above a certain density of traffic -- typical of daytime flow in many cities -- the choice of delay time stopped making any difference to flow.. In such traffic, lights turning green failed to clear the queue that had developed in front of them."
Thanks to Congress on New Urbanism
Read the full story: Phased traffic lights fazed by heavy traffic.
Desperate measures: Advocates weigh draining Lake Powell to fill Colorado River
Draining the reservoir could reduce evaporation losses by a couple hundred thousand acre-feet.
Eastern Nebraska is running out of electricity
Data centers and electrification are straining eastern Nebraska’s grid, throttling economic development.
Move over, LA: St. Louis gears up for Olympics, invests millions in downtown redevelopment
The Missouri city will host the 2028 Olympic soccer group stage and knockout matches.
Mass. votes against statewide minimum lot size for single-family homes
Over 2 million residents voted on Question 7; it was decided by just over 30,000 votes.
Maryland’s $15 billion bridge project gains key approval
The Maryland Transit Authority said the project will create over 60,000 jobs and add $23 billion to the local economy.
‘No clear next steps’ for Chicago's permanent festival grounds
Eleventh Ward Ald. Nicole Lee has suggested Soldier Field as a possible location for the permanent event space.
FREE Course: Walkable City 1: Why Walkability?
After describing his path towards focusing on walkability as the essence of good planning, Jeff Speck marches through his five principal reasons for making more walkable places.
Reinventing Malls: Planning Alchemy—Turning Gray Fields Into Gold
The course focuses on the opportunities and imperatives that shape reinvention of mall sites.
City of Rosemead
Rutgers University, Edward J. Bloustein School of Planning and Public Policy
One Hundred Miles
University of Michigan School for Environment and Sustainability (SEAS)
Hunter College, City University of New York (CUNY)
The Architects Foundation
City of Cambridge
Montrose County
The Pocatello Development Authority