RULE REVISION HISTORY
Rule 2.31: Hazardous Cargo
| Revision Number | Published Date | Effective Date | Comments |
| 5th Revision | 08/26/2022 | 08/28/2022 | Clerical |
| 4th Revision | 10/29/2020 | 11/29/2020 | Initial |
| 3rd Revision | 10/18/2020 | 10/18/2020 | Clerical |
| 2nd Revision | 05/19/2019 | 06/09/2019 | Initial Matter, Increase |
| 1st Revision | 05/30/2008 | 05/30/2008 | Clerical |
| Original | 3/1/2008 | 3/1/2008 |