Inspect Train signal

[nw-mailing-list at nwhs.org]

Gee, Ben, you got the new and improved version.  The original  "Inspect
Train" signals had two aspects -- red, for stop and inspect train,  and
dark, for no defects.  Now imagine what happened when the train
had a defect, but the light had burnt out.
                                                 Harry Bundy
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