It seems to me that if there was a physical barrier that forced cars entering in the right hand lane to take the first exit, there would never be a car on the right of those proceeding to the 2nd. or 3rd. or even 4th. exit.
But ours weren't designed that way and it will never happen. There are some small roundabouts on Hilton Head Island that are designed this way. Low speed, low traffic situations.
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