Why Some Cities Are Better Than Others At Avoiding Gridlock
Just because a city is efficient at moving traffic around doesn't mean it's "traffic resilient." Scientists examined 40 cities and ranked them in terms of how they handle disruptions.
Đọc thêm tại NPR
at December 21, 2017 at 05:03PM
Health & Science
Thứ Năm, 21 tháng 12, 2017
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