This is actually impacting San Francisco buses right now - the transponders that MUNI buses use to transmit their location for arrival estimates use 2G, and the

This is actually impacting San Francisco buses right now - the transponders that MUNI buses use to transmit their location for arrival estimates use 2G, and they stopped working because AT&T started taking down the 2G network. https://www.sfmta.com/about-sfmta/blog/why-muni-arrival-times-are-off-week-and-how-we%E2%80%99re-working-fix-them https://www.sfmta.com/about-sfmta/blog/why-muni-arrival-time...