Oh and sometimes they fail of their own volition and sometimes due to poor quality materials. https://www.sfexaminer.com/news/one-injured-after-overhead-muni-w

Oh and sometimes they fail of their own volition and sometimes due to poor quality materials. https://www.sfexaminer.com/news/one-injured-after-overhead-muni-wire-falls-near-third-and-mission/article_a50a43f7-d7d7-5c9b-a3de-2c12a2eab533.html https://www.sfexaminer.com/news/one-injured-after-overhead-m... https://sf.streetsblog.org/2020/09/02/bad-splices-point-to-fundamental-problems-at-muni https://sf.streetsblog.org/2020/09/02/bad-splices-point-to-f... https://www.cbsnews.com/sanfrancisco/news/muni-wires-fall-on-san-franciscos-market-street/ https://www.cbsnews.com/sanfrancisco/news/muni-wires-fall-on...