The objective of the second edition of these guidelines is to improve the quality of the traffic information that supports decisions at all levels of the transportation profession.

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This packet features the 2009 AASHTO interim revisions to the 2008 edition of ANSI/AASHTO/AWS Bridge Welding Code. Both the interim and the 2008 edition are needed for up-to-date information.

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Covers seismic design for typical bridge types and applies to non-critical and non-essential bridges. Approved as an alternate to the seismic provisions in the AASHTO LRFD Bridge Design Specifications.

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The purpose of this report is to present uniform guidelines for the crash testing of both permanent and temporary highway safety features and recommended evaluation criteria to assess test results.

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Standard Specifications for Structural Supports for Highway Signs, Luminaires, and Traffic Signals, 5th Edition

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