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A main feature of the modern roundabout is a raised central island. The circular shape is designed to control the direction of traffic and reduce speeds to 15 to 20 mph. It also reduces the likelihood of t-bone (right angle) or head-on collisions. The central island of many roundabouts includes a truck apron, a raised section of concrete that acts as an extra lane for large vehicles. The back wheels of the oversize vehicle can ride up on the truck apron so the truck can easily complete the turn, while the raised portion of concrete discourages use by smaller vehicles.
Roundabouts are better than intersections but it’s always bugged me that someone hasn’t come up with something even better, specifically something where we don’t really even have to slow down.
Maybe something like this pattern with various exit ramps along the streets.
Try this one for size and confusion (South Gosforth, UK). Some UK local authorities have devloped a liking for “double” min-roundabouts in built up areas where there are a number of entry roads and not enough room for a proper single roundabout. When you are trying to understand how it works remember we drive on the left!
Works sorta like this?
https://www.purina.com/pro-plan/events/incredible-dog-challenge/30-weave-up-and-back
I suppose, sorta. Except the sticks would be a mile apart or more instead to flatten out the curve.
@dougie Showing my age….that was my first thought at seeing the thread title as well
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