Congestion pricing or urban toll schemes were implemented to enter the downtown area using ETC technology and/or cameras and video recognition technology to get the plate numbers in several cities around the world: urban tolling in Norway's three major cities: Bergen (1986), Oslo (1990), and Trondheim (1991) (see Trondheim Toll Scheme); Singapore in 1998 (see Singapore's Electronic Road Pricing), as an upgrade to the world's first successful congestion pricing scheme implemented with manual control in 1975 (see also Singapore's Area Licensing Scheme); Rome in 2001 as an upgrade to the manual zone control system implemented in 1998; London in 2003 and extended in 2007 (see London congestion charge); Stockholm, tested in 2006 and made the charge permanent in 2007 (see Stockholm congestion tax); and in Valletta, the capital city of Malta, since May 2007.