But, on the other hand:
Quote:
Studies have shown that roundabouts are safer than traditional stop sign or signal-controlled intersections.
Roundabouts reduced injury crashes by 75 percent at intersections where stop signs or signals were previously used for traffic control, according to a study by the Insurance Institute for Highway Safety (IIHS). Studies by the IIHS and Federal Highway Administration have shown that roundabouts typically achieve:
A 37 percent reduction in overall collisions
A 75 percent reduction in injury collisions
A 90 percent reduction in fatality collisions
A 40 percent reduction in pedestrian collisions
...
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https://www.wsdot.wa.gov/Safety/roun...s/benefits.htm
I’m not doubting for a moment that Washington DC is a perfectly ghastly place to drive. I wouldn’t dream of driving in London. The facts, however, do support the idea that roundabouts are both more efficient and safer than junctions with traffic lights.