May 27, 2022
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The American Association of State Highway and Transportation Officials recently released 2022 interim revisions to its Structural Supports for Highway Signs, Luminaires and Traffic Signals, 6th Edition, publication, originally issued in 2013.

[Above image by AASHTO]

AASHTO said that publication serves as a standard and a guide for the design, fabrication, and erection of highway signs, luminaires, and traffic signals.

Image by AASHTO

The 2022 interim revisions include updates to “Section 6: Aluminum Design,” and “Appendix D: Alternative Methods for Fatigue Design.”

These interim revisions are available to purchase in loose-leaf format, as a PDF Download publication, or as a complete set that includes both the loose-leaf and single-user PDF Download at a discounted price.

To purchase a copy, visit the AASHTO Store online at, and search by the publication’s Item Code, LTS-6-I4.

Or click here to link directly to the publication’s page on the AASHTO Store.

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