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Abstract
Seeking a thorough understanding of shared operation between commuter rail transit and freight
railroads, a nationwide survey was conducted of transit and rail freight interaction. This survey
contacted and received responses from all 21 commuter rail services in North America. In addition
to a general understanding of the shared-use practices, this paper presents the key factors that
contribute or impede successful shared-use operations between commuter rail and freight railroads
by examining detailed operation arrangements, shared asset management, dispatching priorities,
accident histories, and insurance and liability issues. A few critical issues directly related to the
success of future shared operations are highlighted for the reference of new-start systems and those
who are seeking knowledge in the arena of shared-use operations.