[andbberger]

the technology is irrelevant, it's purely mismanagement and lack of coordination amongst agencies. modern main line EMUs are perfectly capable of matching BARTs performance.

there are many, many problems with BART's SFO extension (courtesy of quentin kopp), redundancy is not one of them. there was no BART to caltrain connection prior to the SFO extension, and caltrain is a completely unserious transit agency running hour headways.

genuine problems with the transit system in the bay area abound, you should pick one of those to complain about instead of some weird fixation on incompatible gauges