# Transmission line patrolling

- **operation:** document
- **citation:** Mich. Admin. Code R 460.20325
- **title:** Transmission line patrolling
- **source type:** regulation
- **agency:** Michigan Public Service Commission
- **status:** current
- **official:** true
- **published on:** Not available
- **effective on:** 2026-05-04
- **summary:** Rule 325. In addition to the requirements contained in 49 C.F.R.§192.705, which is adopted by reference in R 460.20606, at intervals of not more than 6 weeks, but not less than 12 times each calendar year, an operator shall patrol all transmission lines that are operating at 40% or more of specified
- **machine formats:** - **json:** https://regulus.evalyn.ai/document/mi-admin-code-r-460-20325.json
- **markdown:** https://regulus.evalyn.ai/document/mi-admin-code-r-460-20325.md
- **app url:** https://regulus.evalyn.ai/document/mi-admin-code-r-460-20325
- **source url:** https://ars.apps.lara.state.mi.us/AdminCode/DownloadAdminCodeFile?FileName=R%20460.20101%20to%20R%20460.20606.pdf
**body:**

Rule 325. In addition to the requirements contained in 49 C.F.R.§192.705, which is adopted by reference in R 460.20606, at intervals of not more than 6 weeks, but not less than 12 times each calendar year, an operator shall patrol all transmission lines that are operating at 40% or more of specified minimum yield strength to observe surface conditions on, and adjacent to, the transmission line right-of-way for indications of leaks, construction activity, and other factors affecting safety and operation.

History: 1998-2000 AACS.
- **truncated:** false
- **body characters:** 534