What is a Controlled Parking Zone?
A Controlled Parking Zone (CPZ) is an area where all on-street parking is controlled. This means that parking is only permitted in designated parking bays and that the remainder of the kerbside space is subject to yellow line restrictions.
Its main aim is to discourage commuter and long stay parking by people from outside the area. To make sure that this works fairly, zones are enforced by uniformed Civil Enforcement Officers (CEOs).
How does a CPZ work?
There are signs at the entry roads to all CPZs giving the hours during which the controls and yellow line restrictions are operational.
Sometimes, yellow line restrictions within a CPZ operate for longer than the controlled hours and, if this is the case, there will be signs on the kerb or pavement giving the hours of restriction. The only exception to this is double yellow line restrictions, which always operate "at any time" (24 hours a day, seven days a week) and do not require a sign plate to indicate when they are in force.