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UNION PACIFIC LOCOMOTIVE NUMBERS

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UNION PACIFIC LOCOMOTIVE NUMBERS
Posted by mrbudson on Thursday, September 14, 2006 8:39 AM

HELLO

I HAVE A QUESTION REGUARDING UNION PACIFIC LOCOMOTIVE NUMBER I HAVE SEEN IN A LOCAL SIDDING IN ELK GROVE IL         THE NUMBER IS Y707 WHAT DOES THE Y SAND FOR. DOES THE Y MEAN YARD  USE ONLY.

 

THANKS BOB

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Posted by Andrew Falconer on Friday, October 6, 2006 6:57 PM

How did this post get duplicated.

What a neat trick.

Andrew

Watch my videos on-line at https://www.youtube.com/user/AndrewNeilFalconer

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Posted by Railfan1 on Tuesday, October 10, 2006 6:07 PM
That is correct. A few years ago UP needed a new numbering system to have more blocks of numbers because they were almost at capacity with 4 digit numbers and 5 digit numbers were too big of a hassel with computer systems. Thus, UPY was created. Yard locomotives (swithers, smaller odd locos (i.e. GP15's) etc.) were placed in this new system freeing up larger number blocks for newer road power.
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Posted by jeffhergert on Tuesday, October 10, 2006 10:37 PM

  Even though the GP-15s are in the UPY series, they aren't restricted to yard service.  Some are equipped with Automatic Train Control/Cab Signals and used on main line/branch line locals and work trains.

Jeff 

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