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On following diagrams a red line will be used to indicate the limits of time table authority of westward first class train No. 157 to occupy the main track given the current Railway Standard Time designated. On the diagram above no red line is illustrated as time table authority of train No. 157 to occupy the main track does not begin until 2.54 pm., its schedule leaving time at Deerfield. See Time Table No. 36X to the right of this text.
An eastward train that is inferior to westward train No. 157 and that is intending to arrive at Deerfield must have its last car clear of the main track switch of the Deerfield yard west ladder at or before 2.53 pm. as required by the rules below.
Rule 87. An inferior train must keep out of the way of opposing superior trains and failing to clear the main track by the time required by rule must be protected at that time as prescribed by Rule 99.
Extra trains must clear the time of opposing regular trains not less than one minute unless otherwise provided, and will be governed by trains orders with respect to opposing extra trains.
Rule 88. At meeting points between regular trains, the inferior train must clear the main track one minute before the leaving time of the superior train.
At meeting points between extra trains, the eastward extra train must take the siding unless otherwise provided.
For the above and all following diagram examples it is assumed that no train orders are in effect that supersede the time table authority of train No. 157.
Rules and special instructions effecting train No.157's time table authority to occupy the main track within yard limits at Deerfield and Lake Forest are ignored in order to simplify the diagrammatic explanation.
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