Head-end View wrote:I believe this is the incident that led to the Delayed-In-Block rule, (DIB) to avoid a recurrence of this scenario. Strange that in so many years of railroading, this issue had apparently not come up before this incident.
Some railroads had a provision in effect for years requiring that whenever a train (any train) is delayed in a block it is required to approach the next signal prepared to stop. (Not always observed--I recall a sideswipe that occurred when a freight train, approaching a trailing junction under an Approach Medium, stopped to examine the train and then resumed speed, expecting Medium Clear at the next signal. Unfortunately the dispatcher had taken the signal away and lined the route for a train on the other line--precisely the situation for which the rule was in place--and the oblique collision at the junction resulted.) Of course under that rule a scheduled station stop at Kensington would not have been counted as a delay. Also, Georgetown Jct. didn't happen because of no DIB rule--it seems everybody on the head end simply forgot they had an Approach on the distant.