In the 1960s, local authorities started to introduce parking rules to encourage vehicle turnover. Parking times were restricted and enforceable by fines to encourage motorists to free up their space, enabling more people to access the city centre. Then came the introduction of paid parking with the installation of parking meters.
Today, the imbalance between the supply of parking and demand from users is making city centres difficult to access. Motorists circling round in search of a space add to the existing traffic which in turn increases CO2 emissions and congestion. Paid, time-limited parking is no longer an adequate solution.