After the Implementation of Area Licensing Scheme 1975
The Area Licensing Scheme (ALS), which was first introduced on 2 June 1975, was one of Singapore's first traffic schemes to charge vehicles travelling to city areas at peak hours to reduce rush hour traffic congestion. It ceased operations after 23 years and was replaced by a new traffic technology system, the Electronic Road Pricing (ERP) on 1 September 1998.
