This paper presents a comparative assessment of international research valuing the congestion relief impacts of public transport (PT). It explores previous research valuing congestion relief impacts and examines secondary evidence demonstrating changes in mode split associated with changes in public transport. The research establishes a framework for estimating the monetary value of the congestion reduction impacts of public transport. To illustrate findings a theoretical model is presented where congestion impact evidence is applied to understand congestion relief impacts. Section 2 of this paper outlines the methodological approaches adopted in previous research concerning PT and congestion relief impacts. Section 3 summarises valuations of PT congestion relief benefits from Australasian, European and North American research. Section 4 synthesises the research from section 2 and 3 to establish valuations of congestion relief impacts on a common currency and single year basis. Section 5 reviews mode shift evidence associated with car travel and public transport changes. Section 6 presents a theoretical model where research findings are illustrated by estimating congestion relief impacts for a hypothetical city model. The paper concludes with a summary of key findings and suggestions for further research. (a) For the covering entry of this conference, please see ITRD abstract no. E217541.
Samenvatting