What is the Warm Springs BART extension?
It is a 5.4-mile extension that would run south from the Fremont station to Warm Springs. It was initially part of the BART-to-Santa Clara County extension, but was decoupled due for funding and political reasons. The Warm Springs extension is not expected to be built unless the BART-to-Santa Clara County extension is also built. The latter extension faces a funding shortfall at the moment, and it is not clear how that will be made up.