Description
Item Description:Title from PDF title page (viewed on February 1, 2011).
"Cooperative Research Program"--P. [1] of cover.
"October 2010. Published: January 2011."
"FHWA/TX-11/0-6143-1"--Technical report documentation p.
Electronic resource.
Physical Description:1 online resource (ix, 49 pages) : illustrations (chiefly color), charts.
Format:Mode of access: World Wide Web.
Bibliography:Includes bibliographical references (pages 31-32).