Roundbout intersection

Hello everyone.

This type of roundbout is really common in Brasil highways. How to code this case in intersection type attribute (4-leg (unsignalised) with no protected turn lane)?

Hi Shanna,

Good question. We´ve seen this type of roundabout before in projects in Brazil and Uruguay, This type of intersection is not particularly safe and in Spain, where they are also present, a study showed that accident rates are much high on these open roundabouts than regular roundabouts. The flow operates more like an intersection than a roundabout,. As such, please code as
intersection type - 4-leg (unsignalised) with protected turn lane.
channelisation - present
quality - poor


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