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GG20B Rosters
Owner
Number
Yr. Built
Notes:

Union Pacific

Unknown
2007
Reported in various places that NRE is building four hump units on SD40-2 platforms that will have three engines apiece. Model number is really a guess based on previous model designations. Units will work at the Roseville, CA hump.
GG20B Rosters
Owner
Number
Yr. Built
Notes:

Norfolk Southern?

Unknown
Unknown
Railpower now catalogs a six axle, three engine road switcher based on the RP20BD, but with on a six axle platform like an SD38 or SD40 or similar. Rumored that Norfolk Southern is helping develop the prototypes for the RP20CD and RP27CD using SD50's.
GG20B Rosters
Owner
Number
Yr. Built
Notes:

Norfolk Southern?

Unknown

Unknown

Railpower now catalogs a six axle, four engine road switcher based on the RP20BD, but with on a six axle platform like an SD38 or SD40 or similar, and using four gensets rather than three. It is rumored that Norfolk Southern is helping develop the prototypes for the RP20CD and RP27CD using SD50's.
GG20B Rosters
Owner
Number
Yr. Built
Notes:

Brookville

Unknown
Unknown
Reported by several sources that Brookville is developing a line of genset switchers. Models and specs are not known at this time.

For corrections, questions or to contribute photos, please e-mail me at: here. Thanks!

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