Urban Fold

Synchronized Lights Make Traffic Worse

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

Full Story: Phased traffic lights fazed by heavy traffic.

Comments

Build Your Own Paper Block City

Urban Fold is an all-inclusive kit that allows anyone to build the city of their dreams with a few simple folds.
$24.95
building block set

NEW! Build the world you want to see

Irresistible block set for adults when placed on a coffee table or desk, and great fun for kids.
$25
Wood necklace with city map

City Necklaces

These sweet pendants are engraved on a cedar charm with a mini map of selected cities. The perfect gift for friends and family or yourself!
$28.00
Book cover of Where Things Are from Near to Far

Where Things Are From Near to Far

This engaging children's book about planning illustrates that "every building has its place."
$19.95