Hi,
http://wsim.cs.ehime-u.ac.jp/~shimizu/cajon-pass/signal-rule.html
Please see the 2nd photo from the top of the web page. It is a little hard to see but the north-bound special train which you are saying can be seen. This view was taken at Drawbar Flat toward around Mormon rocks in Cajon pass, last Saturday morning. At this moment, a BNSF north-bound double-stack has been overtaken, which can be seen in front of the photo. The overtaking was immediate, because of the speed difference.
T.S, Japan.
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