On May 26, 2021, a disgruntled Santa Clara Valley Transportation Authority (VTA) employee went on a shooting rampage at the agency’s main Guadalupe light rail yard, fatally striking nine co-workers with bullets before killing himself. There was and is universal agreement that this senseless slaughter of innocent people was horrifying and that every conceivable effort should be made to provide optimal care to the victims and their families.
But why, as a result, did the Authority shut down VTA light rail service for over three months?

They and their consultants have returned to reviewing such long-settled matters as the routing of the extension, an ill-conceived and unneeded Pennsylvania Avenue subway, the number of tracks leading into the Salesforce Transit Center (already studied and resolved twice) and the possible interface in the distant future between the Salesforce terminal and a second subaqueous rail tube, if one is ever built.
The Capitol Corridor system affords a comfortable and reliable way of getting from Auburn via Sacramento, Davis, Martinez, Richmond, Oakland and Newark all the way into Silicon Valley. However, Capitol Corridor trains are currently detoured from the main Coast Starlight route through eastern Hayward and Union City and then along 5 miles of east-west track to rejoin the main line in Newark and for the remainder of the trip to Silicon Valley. Since the East Hayward/Union City route closely parallels BART the detour never did make much sense. And now, with BART being extended through downtown San Jose and all the way to the Diridon Station, it makes even less sense.
Fully automated coupling of the K’s to the M’s at St. Francis Circle and of the J’s to the N’s at the Duboce Portal would achieve this objective by allowing for fewer but longer J/N K/M, N and shuttle trains to operate in the subway.