The speed limit on Oxford's ring-road (excepting the A34 outside Botley) should be reduced to 40mph and that should be enforced by average speed cameras. This would help with road danger, congestion, community severance and barriers to walking and cycling, noise pollution, air pollution, and carbon emissions. more
The Oxfordshire policy on 20mph speed limits says that to be eligible an area must "be within the extent of the built-up environment of the town or village where vulnerable road users and vehicles mix in a frequent and planned manner" and "be in an environment that explains and justifies a lower speed limit to the driver".
A small addition to this would I think make sense. There are sections of road which are not within a built-up area, but which are key walking or cycling links. They may link a village to a bus stop or a strategic cycling route, for example, or an outlying housing cluster (hamlet) to a village centre, or a school to a town centre. Where such sections of road are relatively short and lower speeds would make a significant difference, perhaps because there are no footways or cycling infrastructure, or because crossings are necessary, I think they should be included in the scope of the 20mph policy. more
Motor traffic noise pollution is really two separate problems. The first is local spikes in noise from individual vehicles, sometimes deliberately driven - and even modified - to make noise. The second is high levels of ambient noise from motor traffic generally.
Oxfordshire County Council has allocated £8 million to its 20mph speed limit programme (to be spent over three years). But none of that money has been spent - or looks like being spent - in Oxford, even though lower speeds there would have the greatest effect on road danger reduction. (The 20mph speed changes on Iffley Rd, Cowley Rd, etc. were not part of this programme, but were part of the Quickways schemes, funded by the central government Active Travel Fund.) more