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The main commuter train system in the Bay Area. The "12th street Oakland City Center" stop is right next to the hotel. Use ticket vending machines to purchase reusable (but disposable) mag-strip tickets which must be scanned on the way in/out of the stations. Costs vary based on how far you travel; a one-way trip from 12th St. into SF runs between $3 and $4.

Taxi Service

Taxi's are fairly prevalent in downtown Oakland (and the rest of the bay areaBay Area), but unless you are starting at a major taxi stand (ie: e.g. big hotel, airport, major bart Bart station, etc...) you will probably have to call one to come pick you up.

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The easiest way to get to (and around) SF is to ditch the rental car and take Bart (parking is a nightmare in SF, even in the residential areas). If you want to go somewhere in SF that isn't near a bart Bart station, transfer to MUNI, or hail a cab near on of the downtown Bart stations. (Taking Bart to SF and then hailing a cab is much cheaper then trying to take a cab from Oakland to SF, even with 4 people.)

http://www.sfmta.com/cms/home/sfmta.php

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