This morning, traffic was backed up from the Dumbarton Bridge toll plaza back to I-880; there was a slowdown from Dumbarton mid-span to University Avenue; US-101 northbound was slow (0-15 mph) from Marsh Road to SFO; there was an accident on westbound CA-92 at Alameda de las Pulgas, with traffic slow from De Anza Blvd back into Foster City. That means that just about every bit of my morning drive except the initial couple of miles on surface streets to reach CA-84 would have been at a crawl.
Hearing about all this mess on the radio on by calling 511 (automated traffic information; also available on 511.org, I stayed home and sent e-mail to my office saying, "I'm working from home; if you need my physical presence, e-mail or call me and I'll slog my way to San Mateo." The person managing the two projects on which I'm working (who is back east anyway) called and said she's trying to set up a conference call with one of the clients, and will let me know if we have a meeting, but that can and will be done by phone anyway.