49 CFR § 1242.30
Dismantling retired road property and depreciation (accounts XX-17-39, XX-18-39, XX-19-39, 62-17-00, 62-18-00, and 62-19-00)
November 18, 2020
Separate common expenses in each account for each subactivity (running, switching and other) in proportion to the separation of common repair and maintenance expenses associated with the particular common properties depreciated and/or dismantled.