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It aint that hard, fuck wits
(lemmy.world)
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this post was submitted on 16 May 2025
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Traffic lights on a roundabout kinda defeats the purpose doesn't it? might as well signalize the intersection
Signalised lead ins are helpful to solve flow issues caused by an imbalance in traffic direction at certain times of day. When you get too much traffic building up that can't enter the roundabout due to no gaps you activate the red light before the entrance dominating traffic flow to give a period where the other directions can move through. The actual roundabout works as per normal and you don't have to deal with lights during non-peak periods.
Lights on a roundabout make it not really a roundabout but an unholy mishmash of intersection design. I've got one near me and the only thing going for it was that converting a roundabout was significantly cheaper than the flyover intersection it really should be made into.
There's only one or two in my area that would warrant adding signals, but they're only backed up during rush hour by people trying to take a "shortcut" around the highway traffic. So I consider them kinda self limiting due to the traffic. Not many more people try to take that route at that time when they're aware that it's clogged in the direction of rush hour traffic.
The other is right next to a private school and is only clogged because nobody uses their bus service, so, I don't have any sympathy for the parents.
Tho not preferable, there's cases where it can work. The roundabout layout still provides a better (easier) entry to the crossroads, the traffic lights can create a "cadence". Technically not a roundabout anymore, it does use some of it's qualities.
Anyhow, pedestrian crossings on 2 lanes right before any kind of intersection without any lights is way more dangerous than a roundabout with lights.