I was talking to a couple of crew members on the CZ who said they work a cycle of six days on (one round trip) and nine days off. I believe Coast Starlight crews do four days on and six days off.Conductors and engineers are limited by law to no more than 12 hours at a time. They must have at least 8 hours rest between shifts. Sometimes if a train is very late they will reach that 12 hour limit before the next crew can be picked up. When that happens the train has to stop wherever it is until the relief crew can drive out to meet the train. This happened to me on my Starlight trip Memorial Day weekend. (See my travelogue in the Del Monte Club Car for details, the link is below.)
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Trust God, love your neighbor, and never mistake opinion for truth.
-Mr. Toy
The Del Monte Club Car