For one, they need bathrooms on board. This isn't a third world country.
NH2060 wrote: ↑Mon Jan 15, 2024 7:06 pmIf the M-8 design could be altered to allow for low level boarding then they’ve got a proven model to build upon. The LIRR had that 4-car turbine train that was based off of the M-1 design and had low level boarding capability.
The M-8s are great railcars, but they are an extremely bespoke solution to needing to switch between overhead AC and third rail DC on the fly and (just barely) not be too heavy for the Park Ave Viaduct.
What the US needs is a series of standardized railcar designs. They roughly fall into the following categories (in no particular order):
1. Third rail EMUs for MNRR and LIRR.
2. Third rail and overhead EMUs for MNRR.
3. Overhead AC EMUs with low-level boarding and 25hz.
4. Single-level coaches.
5. ML coaches that clear North River Tunnels.
6. MBTA/MARC Bilevel coach (15'6").
7. Gallery coaches.
8. Low-level Bi-level coaches (15'11").
7. and 8. essentially already are standardized across North America. 8 could replace 7, although Chicago just loves their gallery coaches and probably won't give them up.
6. could be, and in fact current is on MARC, being replaced by 5, but that extra foot of space is quite a bit on a double-decker car. Much of that segment could be replaced by single-level EMUs with more electrification, or DMUs on lightly traveled lines, so it may be too niche to warrant it's own design over using 4 or 5.
5. Should only be used where the capacity is critical and train lengths are already maxed out. In most cases, single-level EMUs are the better bet for commuter service. LIRR should get rid of ML-style cars and electrify the whole WEst End with DMUs on the East End.
Single-level EMUs, in theory, should be able to be used by not just SEPTA and Denver RTD, but MARC, NJT, MNRR's Penn Access with NJT run-through, SLE, MBTA Providence Line, and many future electrified services that really don't need the capacity of double-decker cars.
Having a common design would make construction and maintenance in the long run much more economical versus all these bespoke designs. A design that has an optional 25hz transformer for SEPTA/MARC/NJT/MNRR, and can handle both low- and high-level platforms would have a lot of applications to be built in large numbers, collectively rivaling the numbers of third-rail EMUs on the massive LIRR and MNRR, as well as locomotive-hauled coach fleets.
nomis wrote: ↑Mon Jan 15, 2024 9:03 pmI wholeheartedly believe that this RFI will lead its way from single level, to the Bombardier Multilevel EMU being developed for NJT.
The ML EMUs are not going to have a lot more capacity than single-level EMUs, as all that electrical equipment has to go.... somewhere. They are also another extremely bespoke design. NJT is pushing the absolute limits of what you can cram into 14'6" with curved corners because of the bottleneck of the North River Tunnels... although even that is a shorter-term constraint. The Gateway Tunnels are coming, but an improved Penn Station combined with fully connecting the line to Hoboken and improving ferry service there would combined most likely negate the need for the highly compromised and bespoke ML design entirely, and it could be replaced by single-level push-pull and EMU equipment.
What SEPTA needs are single-level EMUs with toilets... you know, like something that belongs in a first world country.