BART's new ride to Oakland International Airport, due to open in time to ferry travelers to and from their holiday flights, could cost passengers an extra $6 a trip and cost the transit agency about $8 million a year. With construction on the $484 million project nearing completion and the testing of trains and other equipment underway, BART officials are examining what it will cost to operate the driverless, cable-pulled connection -- and how much airport-bound passengers should pay for a ride.

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