Haven't seen those up here, yet. I get the left-turn safety benefit, but it seems counter-intuitive that adding traffic lights (compared to full clover-leafs) will improve flow.
Rgds, D.
Traffic Circles/Roundabouts?
- Thread starter smstonypoint
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Haven't seen those up here, yet. I get the left-turn safety benefit, but it seems counter-intuitive that adding traffic lights (compared to full clover-leafs) will improve flow.
Rgds, D.
ruffdog
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We already have the traffic lights for the on/off ramps to empty out. Full clovers work if you use enough acreage (not here) to allow semis to get up to speed.
GaryM
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A while back they put a DDI in St. Peters Missouri where Mid Rivers Mall passes over I-70. It has helped quite a bit. there were always traffic jams there in the past. A shopping mall, COSTCO, Menard's as well as other strip malls creates a lot of traffic in the area. Unlike the one in the animation, the traffic crossing over I-70 swaps back and forth. If the timing is good you can exit the mall, cross over to the left and turn onto I-70 west with no stops.
Understood. If ramp volume is too high, then backups end up extending out into the main highway (standard layout interchange).
Perhaps I misunderstood the animation..... I was thinking of the lights added to the straight through highway, which are not present normally with clover leafs.
Rgds, D.
ruffdog
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There will only be the need to stop hwy traffic the 2 times they cross. We will no longer need to stop traffic to let people enter or exit ramps. So, we already have the 2 lights and they should be timed quicker with the DDI.