Editing Area Licensing Scheme (section)

==Impact==
According to the book ''The Journey – Singapore's Land Transport Story'', the amount of traffic entering the Restricted Zone in June 1975 (before the ALS was introduced) was 32,500 vehicles, and after the beginning of the ALS in June 1975, the vehicle numbers dropped to only 7,700, between the hours of 7.30 am to 9.30 am, a 76% reduction; and 9% of the users switched to transit.<ref>{{Citation | last = Spencer | first = A. | last2 = Sien
| first2 = C. | year = 1985 | title = National Policy Towards Cars: Singapore| pages = 301–324 | periodical = Transport Reviews |volume=5 | doi = 10.1080/01441648508716609 | issue=4 }}</ref><ref>{{Citation | last = Seah | first = C. | year = 1980 | title = Mobility and Accessibility: Transport Planning and Traffic Management in Singapore| pages = 55–71 | periodical= Transport Policy and Decision-Making | volume=1}}</ref> The use of transit for work related trips into the RZ ''"sharply increased from 33% before the ALS to about 70% by 1983"''.<ref>{{Cite report |url=http://www.cemt.org/topics/urban/Tokyo05/Yap.pdf |title=Implementing Road and Congestion Pricing - Lessons from Singapore |last=Yap |first=Jeremy |date=2005 |page=9 |access-date= |archive-url=https://web.archive.org/web/20060929221430/http://www.cemt.org/topics/urban/Tokyo05/Yap.pdf |archive-date=29 September 2006 |url-status=dead}}</ref>
In 1994 ALS was extended to a full day, resulting in an immediate 9.3% drop in traffic in and out the RZ.

The ALS, despite its simplicity, succeeded in effectively restraining congestion in the RZ for more than 20 years. Before the implementation of ALS and the other complementary measures, the motor vehicle fleet was growing at an annual rate of 6%, and in 1975 the traffic volume entering the RZ was about 100,000 vehicles. After the government intervention, the fleet slowed down to a moderate 4% rate of growth, and traffic entering the RZ was limited to only 230,000 vehicles in 1994.<ref name="auto">{{harvnb|Cervero|1998|p=}}</ref>