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

Re:Ten-year-old invents light-up crosswalks, IBM makes them ... by vacri on Sunday December 23, 2012 @12:21PM (#4959957)
Vehicle tunnels need to be huge and require enormous amounts of power for lighting and ventilation. It'd be more viable to put the pedestrians and cyclists underground...
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Re:Ten-year-old invents light-up crosswalks, IBM makes them ... by Dylan16807 on Monday December 24, 2012 @09:30AM (#4962893)
Surely lighting is not that big of a problem; they're already lighting the roads all night long. You could even install skylights.
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