Drivers may be baffled by these newfangled intersections, but they’re safer than traditional four-way stops.
End-of-summer road trippers: Get ready to merge like never before.
...Here’s a full list of nearly 90 U.S. locations where they’re planned or operational.
...Here’s a full list of nearly 90 U.S. locations where they’re planned or operational.
DDIs are proliferating because they’re safer than a traditional four-way intersection.
Where two, two-lane roadways intersect, drivers have 32 separate opportunities to collide into each other.
In a DDI, there are only 14. The DDI in Springfield, Missouri—the first in the U.S.—showed a 60 percent reduction in crashes since it was installed in 2009, compared to the old design..."
Where two, two-lane roadways intersect, drivers have 32 separate opportunities to collide into each other.
In a DDI, there are only 14. The DDI in Springfield, Missouri—the first in the U.S.—showed a 60 percent reduction in crashes since it was installed in 2009, compared to the old design..."
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