AASHTO has published 2022 Interim Revisions to the AASHTO LRFD Specifications for Structural Supports for Highway Signs, Luminaires, and Traffic Signals , 1st Edition. The LRFD Specifications for Structural Supports for Highway Signs, Luminaires, and Traffic Signals , 1st Edition, includes current research on LRFD calibration, loads, and resistances, as well as sections on fabrication, construction, inspection, and asset management based on best practices. These new 2022 Interim Revisions to the specifications include changes to the following sections: Section 5: Steel Design, Article 5.5.3.2; Section 6: Aluminum Design—Section has been replaced in its entirety; Section 14: Fabrication, Materials, and Detailing, Article 14.5 14.9; Section 15: Construction, Article 15.9; and Appendix C: Alternate Methods for Fatigue Design, Article C.1. It is necessary to have these 2022 Interim Revisions, as well as the 2017, 2018, 2019, and 2020 Interim Revisions, to have all current specification information.