Gray Notebook archives
The Gray Notebook archives provide access to the past five years of our quarterly analysis of multimodal systems and programs.
The Gray Notebook analyzes performance trends of multimodal systems and programs for the quarters ending in March, June, September and December each year. Editions are numbered and publish approximately two months after each quarter ends to allow for review and analysis (e.g. for the quarter ending September 30, 2022, the edition was published in early December 2022).
The past five years of Gray Notebooks are listed below and organized by edition number and the quarter we reported on. We can provide earlier PDF editions by request.
2022
- Gray Notebook 87 - September 2022 (PDF 2.7MB)
- Gray Notebook 86 - June 2022 (PDF 3.7MB)
- Gray Notebook 85 - March 2022 (PDF 4.7MB)
2021
- Gray Notebook 84 - December 2021 (PDF 3.6MB)
- Gray Notebook 83 - September 2021 (PDF 3.3MB)
- Gray Notebook 82 - June 2021 (PDF 3.4MB)
- Gray Notebook 81 - March 2021 (PDF 2.7MB)
2020
- Gray Notebook 80 - December 2020 (PDF 4.5MB)
- Gray Notebook 79 - September 2020 (PDF 4.2MB)
- Gray Notebook 78 - June 2020 (PDF 3.3MB)
- Gray Notebook 77 - March 2020 (PDF 2.7MB)
2019
- Gray Notebook 76 - December 2019 (PDF 3.9MB)
- Gray Notebook 75 - September 2019 (PDF 4.8MB)
- Gray Notebook 74 - June 2019 (PDF 3.1MB)
- Gray Notebook 73 - March 2019 (PDF 3.4MB)
2018
- Gray Notebook 72 - December 2018 (PDF 3.8MB)
- Gray Notebook 71 - September 2018 (PDF 5.8MB)
- Gray Notebook 70 - June 2018 (PDF 5.6MB)
- Gray Notebook 69 - March (PDF 5.6MB)
2017
- Gray Notebook 68 - December 2017 (PDF 5.7MB)
- Gray Notebook 67 - September 2017 (PDF 6.0MB)
- Gray Notebook 66 - June 2017 (PDF 7.1MB)
- Gray Notebook 65 - March 2017 (PDF 5.2MB)
Traction tires are a special type of tire
manufactured with at least 1/8 of an inch tread. Traction tires are usually marked with a mountain/snowflake symbol, the letters M+S or “All Season.”
Carry chains, practice before leaving
Requiring chains keeps traffic moving during storms rather than closing a pass or roadway.
Prep your car. Fill up your gas tank,
pack jumper cables, ice scraper, warm clothing, snacks and water.