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About the Authors
Dr. Cliord Spiegelman is a distinguished professor of statistics at Texas
A&M University, where he has been for twenty-three years. Dr. Spiegelman
has also been a senior research scientist at Texas Transportation Institute
(TTI) for about een years. He held a position at the National Bureau
of Standards (now NIST). Dr. Spiegelman has been a member of TRB
statistics committees for many years, and is a founding member of the
American Statistical Association transportation statistics interest group.
Dr. Eun Sug Park is a research scientist at TTI, where she has worked for
the past nine years. Prior to joining TTI, she wa ...