The HV transmission industry regularly washes the line's insulators, sometimes from the air https://youtu.be/Jeg6idCrcnA but also the ground https://youtu.be/kdIX74tt0lk
I've never heard any mention of WMATA doing so. I have to wonder why a small, self-propelled line cart with a pressure washer could not be built and used during the nightly shutdowns.
[With Google's help, it could even be self-driving..........]
I've never heard any mention of WMATA doing so. I have to wonder why a small, self-propelled line cart with a pressure washer could not be built and used during the nightly shutdowns.
[With Google's help, it could even be self-driving..........]