Text document in PDF format.; Title from PDF title page (viewed on February 7, 2011).; "November 2010."; Reprint. Originally published in Transport Policy.; Includes bibliographical references (p. 11-12).
Title from PDF title page (viewed on February 4, 2010).; "December 2008."; "UCB-ITS-PRR-2006-20"--Technical report documentation page.; Reprint. Originally published: Berkeley : California PATH Program, Institute of Transportation Studies,...