Research Expertise and Interest
traffic and transportation operations, traffic control
Research Description
Michael Cassidy is a Vice Chair for Undergraduate Studies and a Professor of Civil and Environmental Engineering at UC Berkeley. Cassidy’s research focuses on traffic and transportation operations, traffic control, and public transit. In 30 years of academic activity at Purdue University and UC Berkeley, Cassidy has published roughly 75 papers in refereed journals and has supervised more than 25 Ph.D. dissertations.
In the News
Kicking hybrids out of carpool lanes slows all traffic
The end of a California program granting free access to carpool lanes by solo drivers of hybrid cars has unintentionally slowed traffic in all lanes, according to a new report by researchers at UC Berkeley’s Institute of Transportation Studies. It turns out that when regular-use lanes became more congested with the addition of more hybrids, the carpool lanes slowed down as well. The transportation engineers explain this counterintuitive result.