§ Mr. Alan Williams
asked the Secretary of State for the Environment what statistical evidence there is of the relative safety of the experimental mini-roundabouts compared with traditional roundabouts; and if any conclusions are available about the traffic flows which both can handle.
§ Mr. Peyton
It is too soon after the introduction of mini-roundabouts to publish any reliable statistical evidence on the relative safety of these roundabouts. It is estimated that at sites converted from traditional roundabouts to 509W mini-roundabouts there has been a 30 per cent. increase in traffic capacity.