N&W diesel locos with lines under the cab number

[NW Modeling List]

The line under the cab number indicates that the unit does not have self aligning couplers. In a reverse move with other units the lined unit will jack knife causing the truck to derail.

Bob Bowers In a message dated 8/14/2020 10:58:14 PM Eastern Standard Time, nw-modeling-list at nwhs.org writes: Could somebody tell me why some N&W diesel locomotives have a line under the numbers on the cab sides?  I am sure somebody said it to me...but you know how that is.Thank you,Mike Shockley________________________________________
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