The aim of the work presented in this deliverable 23b has been to identify further research needs for long distance intermodal passenger travel. The attempt has been to use as many tools as possible including questions in the LINK midterm stakeholder consultation, interviews with key persons, analysis of the LINK Virtual Library, presentation of results from US Transportation Research Board “Research Need Statements” database, reviews of recently published material such as TRB-ECTRI Working Group “"European-US Transportation Research Collaboration", the Communication from the EC "A sustainable future for transport" together with ECTRIs position paper on the same communication. Together with this the French PREDIM programme is presented. Several examples for further research areas are presented and although one must be careful when dealing with the vast material that has been collected, some conclusions are drawn. It is not however straightforward to identify a limited short list of future research needs, the time has not allowed for a more exact and extensive research gap analysis.