Potential Greenhouse Gas Emissions Reductions from Optimizing Urban Transit Networks

The research will evaluate the potential benefit of design and operational approaches to reducing the environmental impacts of transit systems. Recent investments in the transit sector to reduce Greenhouse Gas (GHG) emissions have concentrated on purchasing efficient replacement vehicles. There has been little focus on the potential of operational and design modifications, such as changes in headways, route spacing and stop spacing, to reduce transit emissions. California Senate Bill 743 (SB 743) allows cities to opt out of using Level-of-Service (LOS) standards when evaluating the impacts of transportation projects, and to adopt metrics such as Vehicle-Miles Traveled.