CALTRAIN, BALFOUR BEATTY AND PG&E CELEBRATE MAJOR MILESTONE OF ELECTRIFICATION PROJECT
https://railway-usa.com/news/79622-caltrain,-balfour-beatty-and-pg-e-celebrate-major-milestone-of-electrification-project-with-successful-energization-and-testing-of-full-51-mile-caltrain-corridor
Electrification of the Caltrain is important not only for Caltrain itself, but also for California High Speed Rail, because the latter shares the same track with the former railway.
But, considering the speed and frequency of Caltrain, it must be difficult to make both of the trains run on the same track.