We thank many individuals and institutions for their assistance with this
work. We gratefully acknowledge research jointly conducted with Nicholas
Compin, Richard Crepeau, and Sharon Sarmiento. In particular, Mr.
Compin co-wrote chapter 8, and Mr. Crepeau's contributions to chapters
3 and 5 and Ms. Sarmiento's contributions to chapter 5 were all critical.
Further, the research assistance of Compin, Crepeau, Richard Daulton,
Sherry Ryan, and Dru van Hengel was essential to moving this project
along at various stages. Much of their and our time was in turn financed
by the University of California Transportation Center via grants from the
U.S. and California Departments of Transportation.