Analysis of information sources in references of the Wikipedia article "Union Pacific Railroad" in English language version.
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New Dress for Spring in 1934. Since that time, all streamliner passenger equipment has been painted the ... Yellow is widely used where high visibility is desired as a safety feature. Union Pacific engineers claim that use of yellow on U.P. trains will further reduce the incidence of grade crossing accidents, especially at night. Nighttime visibility is increased still more by use of red reflection Union
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: CS1 maint: numeric names: authors list (link)This aid was given to two powerful companies, viz., to The Union Pacific Railroad Company, building from Omaha, on the Missouri river, West; and to The Central Pacific Railroad Company of California, building from Sacramento, East.
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: CS1 maint: location (link) Text taken from OCR; may be corrupt.'Hump yards are very complicated and expensive and work when you're bringing things in from lots of directions'...'The more you do preblocking, the more you don't need the complexity-solving machine that is a hump yard.'