Attention: The #CentralSubway is currently being impacted by a system issue affecting signals & switches. ⬆️ Northbound T Third Street trains will switchback at 4th & Bluxome ➡️Shuttle train will single track between Chinatown and 4th & Brannan ➡️Customers can also use the 15, 30, & 45 as alternate options(More: 23 in last 48 hours)