§ Mr. Alan Williams
asked the Secretary of State for the Environment what he considers to be the relationship between traffic flows and the optimum size of roundabouts; and to what extent experience of mini-roundabouts allows conclusions to be drawn about their relative safety.
§ Mr. Peyton
The capacity of a roundabout is increased by increasing the area available for circulation. Mini-roundabouts reduce the outside circumference required for a given capacity. The first accident returns give grounds for hope that they may prove to be safe than alternative designs.