Portland's slowdowns advance the science of transit

"As thousands of frustrated commuters can tell you driving around Portland during rush hour will leave you seeing red: brake lights everywhere you look. But what you may not know is that Portland's slowdowns have done more to advance the science of transportation than almost any other city in the country."  From KATU

Great video on the science of traffic jams using a Portland as a model for about 2 decades. 

"To capture the countless decisions that individual travelers make in shaping a metropolitan area's traffic patterns, Barrett's team is creating a vast, mirror world in cyberspace of every motorist and transit rider, every traffic light, turn lane and bus stop."  From The Washington Post