[Duff]

Roundabouts are great in suburban or low-volume urban environments where speeds are low.

But they can be dangerous for pedestrians in areas where you have a high density of traffic and pedestrians.

The problem is, transit planners tend to think of terms of making things flow well for suburban commuters going to work in the city. They tend to forget about the folks who live in the city.

[keeperofdakeys]

In my city, there is a roundabout with five junctions, although I find most roundabouts fine, I really don't like this one. During peakhour, you can have long wait times, much longer then a respective traffic light. Another interesting thing about this roundabout is gaps in traffics caused by other traffic lights determine which road is currently a main outlet.