Rules vary by location:
BART Bike Station, powered by BikeLink: 10 day maximum
BART Bike Station, Staffed valet: 7 day maximum
BART Bikeep rack: Up to 24 hours
Sacramento BikeHub: Up to 72 hours
Palo Alto BikeHub: Up to 72 hours
Bikes left over time may be immobilized, donated or discarded. Abandoned vehicles may be subject to an impound fee.