5 ms·

I'm not seeing the difference between this and two lane roundabouts. We have a bunch of these in the southern suburbs of Minneapolis/St Paul, and they work well

I'm not seeing the difference between this and two lane roundabouts. We have a bunch of these in the southern suburbs of Minneapolis/St Paul, and they work well even on roads with moderately high traffic. My only issue with them is that I find them somewhat scary as a pedestrian during winter. The first few times I encountered a two lane roundabout, I had some concerns about whether you had to cut across lanes to exit in some cases (especially when going straight across the roundabout). But after using it a bit, it's clear that it works pretty well, and that it's no worse than a 1 lane roundabout.

zamadatix 7y ago
https://www.google.com/maps/@39.9561738,-86.1623079,150a,35y,359.17h/data=!3m1!1e3 https://www.google.com/maps/@39.9561738,-86.1623079,150a,35y... is a "standard" two lane roundabout. Roundabouts like https://www.google.com/maps/place/Minneapolis,+MN/@44.8833864,-93.2865412,111m/data=!3m1!1e3!4m5!3m4!1s0x52b333909377bbbd:0x939fc9842f7aee07!8m2!3d44.977753!4d-93.2650108 https://www.google.com/maps/place/Minneapolis,+MN/@44.883386... are more similar to a turbo roundabout but does not force traffic out after 3 exits or less, the inner lane could be followed indefinitely.
- mcv 7y ago
  On that second link, I don't see any roundabout at all. It looks like a regular intersection to me.
  - Ajedi32 7y ago
    Maybe the aerial imagery is out of date? It looks like a regular intersection on the satellite view, but Google Maps has it marked as a roundabout.
    - zamadatix 7y ago
      This is interesting, I seem to be getting newer aerial imagery than either of you https://i.imgur.com/tC6fsQm.jpg https://i.imgur.com/tC6fsQm.jpg
      - bena 7y ago
        If you switch to globe view, the image changes.
        zamadatix 7y ago
        Yep that's it, globe view has the newer image and legacy mode has the older image.
peeters 7y ago
Took me a second look to see it, look at the diagram in the Wiki link. The inside lane physically becomes the outside lane at two points, meaning you don't have to cross a lane to exit like you would sometimes need to in a "normal" two-lane roundabout.

zamadatix 7y ago

https://www.google.com/maps/@39.9561738,-86.1623079,150a,35y,359.17h/data=!3m1!1e3 https://www.google.com/maps/@39.9561738,-86.1623079,150a,35y... is a "standard" two lane roundabout. Roundabouts like https://www.google.com/maps/place/Minneapolis,+MN/@44.8833864,-93.2865412,111m/data=!3m1!1e3!4m5!3m4!1s0x52b333909377bbbd:0x939fc9842f7aee07!8m2!3d44.977753!4d-93.2650108 https://www.google.com/maps/place/Minneapolis,+MN/@44.883386... are more similar to a turbo roundabout but does not force traffic out after 3 exits or less, the inner lane could be followed indefinitely.

mcv 7y ago
On that second link, I don't see any roundabout at all. It looks like a regular intersection to me.
- Ajedi32 7y ago
  Maybe the aerial imagery is out of date? It looks like a regular intersection on the satellite view, but Google Maps has it marked as a roundabout.
  - zamadatix 7y ago
    This is interesting, I seem to be getting newer aerial imagery than either of you https://i.imgur.com/tC6fsQm.jpg https://i.imgur.com/tC6fsQm.jpg
    - bena 7y ago
      If you switch to globe view, the image changes.
      - zamadatix 7y ago
        Yep that's it, globe view has the newer image and legacy mode has the older image.

peeters 7y ago

Took me a second look to see it, look at the diagram in the Wiki link. The inside lane physically becomes the outside lane at two points, meaning you don't have to cross a lane to exit like you would sometimes need to in a "normal" two-lane roundabout.