[Tossrock]

Carpool lanes are two people in the Bay Area. Did you mean you had zero rather than one companions, or were you unaware of the law?

[d2vid]

If you have an electric car and get a permit you can drive in the carpool lane alone: http://www.arb.ca.gov/msprog/carpool/carpool.htm

[Domenic_S]

Huge swaths of 80 and 880 are three-person HOV lanes. Take a look at the interactive map here: http://rideshare.511.org/

[Tossrock]

Well, I'd quibble about 'huge swaths', but I was in the wrong, so my mistake. I guess this is what I get for going to Oakland once per year.

[rdl]

Yeah, it's specifically the Bay Bridge; since they did work last weekend, it seems to have become a parking lot all morning. Not sure why. It's HOV-3.