This morning, I saw CN SD60F road number 5562 as the middle unit in a three locomotive consist on an eastbound UP manifest on the Geneva Sub. From the outside, on the engineer's side below the unit number, I saw the following in smaller letters: GF862-B. I've seen this sort of alphanumeric combination on other CN locomotives, and have always wondered what this means. Anyone that knows, feel free to edify, TIA...
--Dorian--