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Prior to the days of PTC, signals that were approach lit would remain dark (shut off) until there was a train in the block approaching the signal. However, with the advent of PTC, signals will now light up just as soon as the dispatcher aligns a route through them. Such is the case at West Cliff (CP DS038) as we see a clear (green over red) signal set up for the eastbound Zephyr, still 90 minutes away.
Additionally, take note of the switch here at West Cliff. For a long time, this switch was set up as a "Y", meaning both the main and the siding slightly curved away from the single main track. However, UP has reconfigured the switch so the main is straight through the entire switch.
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