Caltrain is currently single-tracking south of San Mateo (southbound trains running on the northbound tracks).
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Train #254 stopped at the northbound tracks at Hillsdale.

Jan 8, 2018 · 11:17 PM UTC

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Sounds like #254 will be back on the southbound tracks at Belmont based on nitter.vloup.ch/Scissorslah/stat…