Firstly, let me say that I write as an Englishman, unfamiliar with US railroads, so please forgive any obvious inaccuracies. Now, two questions, really.
1) Looking at photos of, say, class T-1B, this seems to be a sixteen wheeler, or 4-4-4-4 in steam terms (2-B-B-2?). The P-1a seems to be 4-6-6-4, using the same terminology. Question. What was the purpose of the two four-wheeled bogies (trucks), which protrude from the front and rear of the loco? They do not appear to be load bearing, as in steam locos, and appear to have railings, as if for engineer or shunter use?2) Was, or is, there a class of electric loco, possibly similar to the above, with a (steam type) wheel arrangement of 4-6-4, preferably with the six centre wheels coupled? New York area?
Thank you!