Roundabouts are used in area of moderate to high traffic where multiple roads meet and places where continuous flow is needed. Like motorway junctions. The junction near me is very high traffic, and we use a roundabout with traffic lights too. They can be less effective if the flow of traffic is heavy in one direction but not the other.
Traffic lights are used in busy urban areas where there are a lot of pedestrians or places with uneven traffic distribution. These can cause issues of slowing traffic in quieter times due to lights not really being smart and knowing when people are there.
Because they don’t provide any breaks in traffic, high flow times can make it difficult for people living downstream to get out of their driveway
People with eyesight disabilities can have problems navigating them. Advocacy organizations would like them to use stop signs rather than yield signs, but this reduces the throughput of the roundabout.
They’re good in low traffic areas. They’re way better than a 4 way stop, but in high traffic areas traffic lights are better.
Edit: Apparently I was wrong about this.
Absolutely not. And roundabouts have traffic lights too, these are not mutually exclusive.
Not necessarily.
Roundabouts are used in area of moderate to high traffic where multiple roads meet and places where continuous flow is needed. Like motorway junctions. The junction near me is very high traffic, and we use a roundabout with traffic lights too. They can be less effective if the flow of traffic is heavy in one direction but not the other.
Traffic lights are used in busy urban areas where there are a lot of pedestrians or places with uneven traffic distribution. These can cause issues of slowing traffic in quieter times due to lights not really being smart and knowing when people are there.
Upvoted you because you admitted to being wrong.
A few actual problems:
If a driveway directly leads into a high flow road, you have a stroad problem, not a roundabout problem.