Kent Olsen of PB AMERICAS Inc. gave a presentation on public-private partnerships at a 2008 transportation forum. He discussed what PPPs are, their history of use for transportation projects in the 19th and 20th centuries, and their potential advantages and disadvantages. PPPs can provide additional funding, risk sharing, and faster project delivery through private capital investment. However, they also mean less public control and long-term commitments. To encourage more PPPs, the public sector should define projects well, streamline processes, and draw on lessons from other PPP transportation projects.