I think most crossroads could accomodate a mini roundabout, maybe lopping off each corner a bit. Where I live, converting an crossroad to a roundabout seems to

I think most crossroads could accomodate a mini roundabout, maybe lopping off each corner a bit. Where I live, converting an crossroad to a roundabout seems to take about a year, they close and completely excavate the existing roadway, relocate storm drains, build a huge center island, and take an additional 10' of property all around. It seems excessive.