Planners at King County Metro Transit (WA) will compare two propulsion technologies for replacing its aging fleet of trolleybuses: updated electric trolleybuses or diesel-electric hybrids.
Mechanical problems with the hybrid engines, record heat, and traffic congestion have caused breakdowns and delays for Baltimore’s Charm City Circulator this summer.
Susan Bregman is editor of The Transit Wire. She has been a consultant on transit policy and planning for fifteen years and before that worked for the Boston Transportation Department. In 2004 she founded Oak Square Resources, LLC, which focuses on transit research, policy, and communications.