Could you explain what a "non-isolated" cab is and why they aren't supposed to lead a train? (I know there are good reasons.) Also, do these trains tend to be heavier than loaded coal trains, or about the same, and how do they align their DPUs? "Down south", the KCS runs its long-haul coal trains to Louisiana/Texas in 2-2-1 (2 motors up front, 2 around the last third- or fourth- of the train, 1 at the end) and BNSF runs loaded ones to the southeast with 2 up front, 3 at the end. I usually miss the KCS oil train and don't get to see the BNSF southern oil trains enough as they run farther west toward Tulsa. I'm sure it depends on where these are headed (flat midwest and south vs. the rocky mountains and pacific coast). Thank you in advance.
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