Departmental Papers (ESE)

Document Type

Review

Date of this Version

5-1999

Publication Source

Transportation Journal

Volume

38

Issue

3

Start Page

68

Last Page

70

Copyright/Permission Statement

Posted with permission from Penn State University Press: http://www.psupress.org/Journals/jnls_main.html.

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Date Posted: 08 December 2016

This document has been peer reviewed.