Mk1

* See also Mk2 and AE
* See also An Expanded_Atlantic_Express_System
* See also Prentice Mill
* See also Crash
* See also Transportation_Systems and Transportation_Stuff
* See also Real_Trolleys_and_Subs_and_Trains
* See also Mk1 and AE
* See also Derp_Transportation_in_Columbia
Early version of the Atlantic Express train system built by Prentice Mill which ran throughout Rapture. The original system was created as the city was built ( and used a great deal to transport material and workers to build the city ).
Later ( in MY expansion of the story ) much of the AE system was rebuilt using a new improved AE_Mk2 design. Some sections of the old system remained ( like the old section seen/ridden in BS2 - in which you ride across a Southern part of Rapture ).
Consider : The AE system was more equivalent to a City Subway, having spaced Station stops linking clusters of buildings ( The City of Rapture is not much more than 3 miles end to end, so is much less than that era's Passenger "Train" systems ).
Pix AE Mk1 remnants
Pix of AE equipment
Pix of AE FREIGHT equipment
Blue dot lines is remnant of Mk1 system
SEE Expanded_Atlantic_Express_System - mapping of the larger Transit system that Rapture would have.
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In-game Atlantic Express Map
This would actually be only a partial AE System map ( minimized just for that one route's station diagrams )
Unfortunately the various artists/developers obviously did NOT coordinate, as the matching Schedule board listed stations West BEYOND "Atlantic Express Depot" on the same route sequence VVV Fontaine Court is where I located the start of New Rapture - with its proximity to different Factions .
Route Schedule Board
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Symbolic/abstracted Map of original AE System. The Mk1 System before the Rebuilding ~1952
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Seen outside (Thru windows) in Paupers Drop - Abandoned AE Traincars : 
Mk1 equipment left on the seafloor (not scrapped) and chunks of wrecked Mk1 track laying about. Trackwork structures in a poor condition leading into "Maintenance Junction 17" ( which after the Mk2 conversion/rebuilding was unneeded/disused/abandoned ). Trains no longer running thru the building meant no more train noise and shaking to disturb the district's residents ( ie- that scene from Blues Brothers with apartment right next to the elevated train tracks ).
Considering that WE SEE Mk1 Trains still operating, and that this 'abandonment' took place long BEFORE the 'civil war' Chaos, you would have have the management bring in all equipment ( bankruptcy usually meant just a financial restructuring of the company ) for the parts of the system NOT abandoned. 
SO this wreckage viewed may be post 1960, when Ryan was dead and Sofia Lamb let sections of the transportation system in her corner of Rapture deteriorate ( probably inevitable with The Rapture Family's mental instability ). Another indicator maybe that other parts of Rapture cut themselves off As I propose for the MMORPG story from the insane collectivist (Lamb). 
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Mk1 TrainCar - Smaller than the later Mk2 cars
A bit ornate, Steampunky looking. The Streamlined decades-old (then) styles were smoother.
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