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Having seen some roundabout implementations, I'm no longer convinced. Traffic circles require a large flat space, and can't easily replace stop lights on steep
by stephengillie 11y ago
Having seen some roundabout implementations, I'm no longer convinced. Traffic circles require a large flat space, and can't easily replace stop lights on steep hills or narrow crevasses.
A roundabout replaced a set of traffic lights at a 3-way intersection in a crevasse next to SR-18 in Auburn, WA. It's a tight fit and difficult to navigate, and trucks regularly jump the curb.
After driving it, I really wish they could change it back.
- Animats 11y agoRoundabouts may work very well for self-driving cars with some short-range communications capability. Merges can be negotiated, both at roundabouts and on-ramps.
- stephengillie 11y agoRoundabouts allow only simple traffic interactions, that's kinda the point. Nothing complicated like a left turn can happen. Why would special communication be needed?