Saving lives, safer roads, cutting crime, protecting the environment

Skip Navigation | Accessibility | Site Map



24-06-09 New VOSA test helps cut emissions

The Vehicle Operator Services Agency (VOSA) has introduced new smoke level standards to help operators comply with European legislation on the standards required for exhaust emissions.

The stringent tests will be carried out on Heavy Goods Vehicles and Public Service Vehicles equipped with Euro 4 engines or better from 1 July 2009.

Compliance is determined by running the engine through a standard test cycle during annual test. Euro 4 engines usually easily meet the new standards, but if the smoke level falls short of the requirements then the smoke opacity test will identify this.

VOSA has already discussed the new standards with the trade representative bodies and trialled the new tests at some VOSA stations.

Operators are advised to ensure engines are serviced in compliance with manufacturers’ instructions.


Notes to Editors:

VOSA’s smoke meters do not need to be modified for this new standard as the fast pass test is set to the required level.

The new 1.5m-1 measure applies to vehicles first registered from 1 July 2008.

VOSA (Vehicle & Operator Services Agency) is an executive agency of the Department for Transport. It is responsible for:

Processing applications for licences to operate lorries and buses and registering bus services

Operating and administering testing schemes for all vehicles, including the supervision of the MOT testing scheme

Enforcing the law on vehicles to ensure that they comply with legal standards and regulations

Enforcing drivers' hours and licensing requirements

Supporting Traffic Commissioners to help them make informed decisions on operator licensing, vocational drivers and bus registration requirements

Providing training and advice for commercial operators

Investigating vehicle accidents, defects and recalls

For media inquiries about VOSA, please contact: Rachel Hicks on 0117 954 3208 or Zita Easton on 0117 954 2561 or e-mail:

Page last updated: 24/06/2009

Email the Author