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I'd still like to kick the engineer who thought of this. Seems like it will be a huge headache.
It is a French invention and incredibly efficient, increasing throughput about 30-40% with much less time sitting and waiting for other directions to have their green time.
Atlanta has about 10 and have greatly improved regularly snarled areas.
Just two traffic signals are required at the crossover points.
They are just 2 phases alternating stop and go for your side or the oncoming side.
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By briefly switching sides, consider all of the signals not needed and all of the waiting for left turners on both sides of the freeway now eliminated.
We all make rights turns without needing a signal to do it safely, and this allows lefts to be made safely without needing the left arrow or worrying about yielding to oncoming cars.
Last edited by architect77; 06-07-2018 at 01:32 PM..
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