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English: What the numbers on SP locomotives mean. On either side of the boiler near the smoke stack or further back, indicators are displayed. These are train numbers (figure 1). All trains going toward San Francisco are called 'westward' and are odd-numbered such as 1, 3, and so on. A train going away from SF are called 'eastward' and are even-numbered. The example in figure 1 shows 99 as the train number which is the number of the streamlined Daylight, northbound.

In order to carry all the people wishing to ride on the same train, sometimes it was necessary to operate the train in two or more separate parts, which are called 'sections.' When a train is operated in sections, the first section carries a '1' preceding the train number (figure 2). The second section carries a '2', etc., and the last section carries the train number only.

Special trains or 'extras' carry the locomotive number preceded by an 'X' (figure 3).

Date
Source My fathers papers
Author Southern Pacific

All trains going toward San Francisco are 'westward' and are old numbered, going away are even; Fig 2 is for sections; Fig 3 are special or 'extras'

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31 December 1954

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