The 40 km/h limit - being as objective as we can

The 40 km/h speed limit is more a question of amenity rather than safety. A 40 km/h limit is likely to improve amenity for local residents and reduce it for motorists. Changed attitudes to speeding and the use of speed cameras for enforcement mean that a 40 km/h limit is not necessarily bound to fail, but its success is by no means certain. It is essential to put in place a comprehensive evaluation should a 40 km/h limit be introduced, which must be planned well in advance to ensure adequate before data is collected.