Working Together to Address Induced Demand

Induced demand—the increased travel that results when a roadway is built or expanded—is a complex phenomenon and the subject of much discussion during transportation project planning. This report, based on a forum conducted by the Eno Transportation Foundation with sponsorship from the Environmental Protection Agency and the Federal Highway Administration, defines induced demand, quantifies the magnitude of induced demand at the national level and at the metropolitan/corridor level, and provides a better understanding how travel demand models address induced demand. If you’re involved in transportation policy or planning, then you’ll want to read this report, which summarizes some of the best thinking on the subject of induced demand. Report includes the forum summary, plus four background papers on induced demand.