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A comment on Ten-year-old invents light-up crosswalks, IBM makes them real.

Re:Ten-year-old invents light-up crosswalks, IBM makes them ... by jtchang on Sunday December 23, 2012 @01:25PM (#4960153)
I believe outside San francisco city hall we have a crosswalk which lights up. I believe it with with LEDs that flash. I like this on way better.

Does it turn off immediately when there is no one in the crosswalk?

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