English: Oakland Wye, the intersection that allows all East Bay lines to funnel through the Transbay Tube to connect with San Francisco. Compared to earlier version, added colors, arrows, and track labels to distinguish tracks. Prior version made it look like one track was potentially bidirectional. At 12th Street station:
C1 (upstairs), Richmond-bound trains
C2 (downstairs), San Francisco or Fremont-bound trains
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