20mph zones are tricky, largely because they need to be enforced and are not (I would say quite rightly) a priority for the police at the moment. This means they only work where the average speed of the traffic has already been significantly reduced – and this is where the safety scheme has played a part.
Personally I think the current scheme has been incredibly successful. The raised beds are attractive and in keeping with the conservation area and, living close to one, don’t seem to create the noise problems so often associated with traffic calming – and the evidence shows they have slowed traffic, speeds on Elsley and Sabine Roads have been reduced by 6mph on average.
The 20mph zone will require some more roadworks – Grayshott and Tyneham Road will be getting the new raised beds (like those elsewhere in the area) at their junctions with Eversleigh and Ashbury Roads. Additionally there would be raised entries to the estate at the junctions of Heathwall Street and Sabine Road with Latchmere Road, and raised entries to Wickersley and Wycliffe Roads. Together these also have the benefit of providing traffic calming in the roads serving local schools.
The proposals are due to be considered at next week’s Planning and Tranportation Committee. You can get all the details from the (rather dry) committee report on the council’s website.