Update, 12:36 p.m.: According to BART, PG&E just completed the operation, and a service recovery is in progress.
If you've just ensconced yourself in an office cubicle in San Francisco, you may be stuck there.
Apparently, BART has stalled service between San Francisco and the East Bay, owing to a wayward tractor-trailer that hit a power pole at 7th and Maritime Streets, near the tracks in West Oakland. Anyone commuting eastward faces delays of up to 30 minutes -- the time allotted PG&E to fix the problem, according to BART spokesman Jim Allison.
That's an unsettling prospect for anyone stuck on the platform. But we feel slightly worse for the big rig.