The boarding platform for BART trains at San Bruno Station is one level below the street level.
On the street level inside the paid area there is one elevator down to all trains.
When you exit the elevator you will be at the center of the train boarding platform.
The boarding platform for BART trains at San Bruno Station is one level below street level.
There is one elevator up to the street level at the center of the platform.
When you exit the elevator you will be inside the paid area where the station agent is located.