My objection to roundabouts really isn't about bikes or cars. They are great for cars and tolerable for bikes. The biggest problem is for the people who use crosswalks, especially the handicapped. The crosswalks are placed outside the circle across the lanes. Drivers coming in are concentrating on the merge, drivers coming out are accelerating in relief. Someone who is legally blind or very slow just has to step out and pray anyone who comes is going to stop.
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Genesis 49:16-17