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How Do SF Bus Stops Know When The Bus Is Coming?

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How Do SF Bus Stops Know When The Bus Is Coming?

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(CBS 5) In San Francisco, you used to wait for the bus. But now a new system tells you when it's going to show up at a nearby stop. But how does it really know when the bus is coming?

Our video report has more.

(© MMIX, CBS Broadcasting Inc. All Rights Reserved.)

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