So this snippet is very
Abrams also expressed concern that Tri-Rail would not be able to use the Miami Central Station (MCS) as planned, because of potential issues with Positive Train Control (PTC): “Now that [VTUSA] has suspended operations, SFRTA has no assurances when it will be able to access the FECR Corridor and the MCS. [VTUSA] is no longer subject to the deadline of Dec. 31, 2020 to implement the federally mandated PTC system because it is not operating its service. Further, it is our understanding that [VTUSA] has recently elected to change the type of PTC system it was originally installing.”
A new PTC system this late in the game? Did E-ATC not have the throughput they wanted? I can't imagine there were any technical issues. E-ATC is little more than a modification of the ATC system the FEC's already used for decades.
I really doubt it's I-ETMS. That's for the plebs who have to share with a Class I, and it's not well-suited for the kind of passenger service Brightline wants to run.
Since Brightline presumably has the full cooperation of the FEC in this matter (most likely because they're covering the cost, as the FEC itself has no statutory requirement for PTC), they could choose any system on the market.
Needless to say, any change at this juncture would massively
delay the Tri-Rail downtown link.