According to traffic engineers, chronic backups are caused by drivers.
"Anywhere from a quarter to half of the congestion we suffer through is our own fault.We run out of gas. We butt into merge lines. We slam into each other. When trouble strikes someone else, we slow down and gawk.Traffic engineers call the ensuing backups "nonrecurring" congestion. They are the delays that madden people most, the kind that no amount of careful planning can control. They strike anywhere at any time, with the power to turn a barely tolerable -- but at least predictable -- drive into a full-blown mess."
Thanks to Congress on New Urbanism
FULL STORY: Driver Habits Blamed for Tie-Ups

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

San Francisco's School District Spent $105M To Build Affordable Housing for Teachers — And That's Just the Beginning
SFUSD joins a growing list of school districts using their land holdings to address housing affordability challenges faced by their own employees.

The Tiny, Adorable $7,000 Car Turning Japan Onto EVs
The single seat Mibot charges from a regular plug as quickly as an iPad, and is about half the price of an average EV.

San Diego Votes to Rein in “Towering” ADUs
City council voted to limit the number of units in accessory buildings to six — after confronting backyard developments of up to 100 units behind a single family home.

Texas Legislature’s Surprising Pro-Housing Swing
Smaller homes on smaller lots, office to apartment conversions, and 40% less say for NIMBYs, vote state lawmakers.

Even Edmonton Wants Single Staircase Buildings
Canada's second most affordable major city joins those angling to nix the requirement for two staircases in multi-family buildings.
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.
Borough of Carlisle
Smith Gee Studio
City of Camden Redevelopment Agency
City of Astoria
Transportation Research & Education Center (TREC) at Portland State University
City of Camden Redevelopment Agency
Municipality of Princeton (NJ)