Nottingham city centre's 20mph limits will be enforced soon after concerns were raised over the issue elsewhere in the UK. Recently, Giles Orpen-Smellie, Conservative Police and Crime Commissioner for Norfolk, spoke out about how he viewed separate '20mph zones' as difficult to enforce, with local police then confirming it did not issue tickets for driving at up to 30mph in these areas, stirring up divisive national coverage.
According to a Department for Transport (DfT) research study, there are two distinct types of 20mph schemes with '20mph limits' indicated by speed limit signs, whilst '20mph zones' are designed to be self-enforcing by using traffic calming measures like speed humps and chicanes.
DfT guidance added successful schemes are usually self-enforcing, as there should be no expectation of additional police enforcement unless it has been agreed with the local council.