Have you noticed how many speed signs there are in the conservation area? A casual stroll through our leafy streets will reveal no fewer than 33 signs telling us what we all know anyway, that this is a 20mph zone. This number does not include the many small and fairly discrete speed reminder signs that are attached to lampposts, these are the full-size things, some of them on large rectangular grey backgrounds incorporating warnings about the CPZ. Most of the signs are double-sided, providing the valuable advice that one is making a transition from a 20mph speed limit to a... 20mph speed limit.