Emission Standards and Controls

The Smoky Vehicle Control Programme

Vehicles emitting excessive dark smoke may be reported by trained accredited spotters. The Environmental Protection Department (EPD) investigates and screens the reports, and then asks vehicle owners to bring their vehicles for smoke test. Non-attendance at the test or failure to pass the test within the specified period can result in the vehicle licence being cancelled. If dark smoke emission complaints from the public are received, the EPD checks the information and issues advisory letters to the vehicle owners drawing their attention to rectify the problem. The numbers of smoky vehicle reports received, smoky vehicles tested, licences cancelled and advisory letters issued to car owners were all dropped in 2008.

Smoky Vehicle Control Programme Enforcement Statistics See Data

Emission Standards The most stringent international emission standards are applied to newly-registered vehicles. The Euro IV standard was implemented in phases starting from January 2006. As a result of this and other control measures, emissions of nitrogen oxides and particulates from vehicles have been dropping despite an increase in kilometres travelled.

Vehicle Kilometres Travelled and Emission Trend See Data

Comparison of New Vehicle Exhaust Emission Standards See Data