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Copyright Statement

Copyright 1999 American Road & Transportation Builders Association/Texas A&M Transportation Institute

This site was produced and is maintained by Texas A&M Transportation Institute (TTI) under a contract with the American Road & Transportation Builders Association (ARTBA) and the Federal Highway Administration (FHWA).

The appearance of links on this site does not constitute endorsement of the sites, or the information, products, or services contained in these sites by TTI, Texas A&M University System (TAMUS), ARTBA, or FHWA. The above parties do not exercise any editorial control over information found at these locations. These links are provided for your convenience.

The listing of products and manufacturers on this web site should not be interpreted as an endorsement by the parties involved.

Logos and names used herein may be trademarks and should not be copied without permission of the owner.

The following notice is provided as required by the Digital Millenium Copyright Act:

If you are aware of a copyright infringement on this web site, notify the designated agent (see below). Rights of a user of the TTI network may be terminated if the user repeatedly infringes upon the rights of copyright owners.

Full legal name: American Road & Transportation Builders Association – Transportation Development Foundation
Other names: ARTBA, ARTBA-TDF
Address: 1219 28th Street, NW, Washington, DC 2007
Designated agent to receive notification of claimed infringement: Bradley Sant
Address of agent: American Road & Transportation Builders Association – Transportation Development Foundation, 1219 28th Street, NW, Washington, DC 2007
Telephone number of agent: 202-289-4434
Fax number of agent: 202-289-4435
Email address of agent:

Last modified: 04/11/08

This material is based upon work supported by the Federal Highway Administration under cooperative agreement No. DTFH61-06-H-00015.  Any opinions, findings, and conclusions or recommendations expressed on this site are those of the Authors and do not necessarily reflect the view of the Federal Highway Administration.