Highway Manual Change Transmittals
| Effective Date | Manual Change Transmittal Memo |
Subject Area |
| 07/01/2020 | June 19, 2020, 7th Edition (PDF) | Inside Cover, Foreword, Table of Contents, all Chapters; and Index (PDF) |
| 12/31/2020 | December 28, 2020, 7th Edition (PDF) | Table of Contents; List of Figures; List of Tables; Chapters 60, 80, 100, 300, 620, and 900; and Index |
| 5/20/2022 | May 20, 2022, 7th Edition (PDF) | Table of Contents; Chapters 60, 80, 100, 200, 300, 400, 500, 600, 610, 630, 640, 660, 680, 700, 850, 860, 870, 880, and Index |