The cheerful press release contains the following gem:
The system, which costs $231 million, is fully interoperable with freight traffic using the Caltrain corridor and future High Speed Rail trains.This one sentence could easily make one choke twice on the same pretzel. First, the astronomical cost of more than $4 million per route mile is more than triple the world standard for similar projects. Second, the claim of interoperability with HSR is an outright lie according to Caltrain's own contracting documents.
Interoperability, in this context, means spending additional millions to outfit each and every high-speed train in California (in a fleet that will dwarf Caltrain's) with CBOSS on-board signaling equipment. Under this definition, CBOSS is no more interoperable with future "High Speed Rail trains" than it is interoperable with the red rail-cycle pictured above.