The case examples of public-private freight collaboration documented in this report illustrate why investing in a private good has public benefits, and why these ventures are worth the effort involved to both the public and private sectors. The four examples range from a simple state/railroad partnership around a single rail line and port to much more complex multi-state, multi-modal collaborations involving hundreds of millions of dollars in improvements. In each case, money served as an early catalyst for getting the parties to the table, but each collaborative mechanism was unique. Other important ingredients to these projects were strong leadership and respect among the participants, attributes that built trust and kept collaborators together, leading to success for all the partners. One unexpected finding is that once trust is established, partners in successful collaborations go on to take on other tasks for their mutual benefit.