UNECE World Forum for Harmonization of Vehicle Regulations (WP.29): Working Party on Pollution and Energy (GRPE)

This organisation is responsible for the development and worldwide harmonisation of technical standards for motor vehicles. The FOEN was actively involved in the Working Party on Pollution and Energy (GRPE) UNECE WP.29. From 2011 to 2013 it has been heading a working group that is developing a globally harmonised test procedure for passenger cars.

The existing New European Driving Cycle (NEDC), by means of which emissions of CO2 and other air pollutants from the exhausts of new motor vehicles are tested, and which is also of relevance in Switzerland, no longer corresponds to present-day reality. This means that the fuel consumption of motor vehicles and the levels of CO2 emissions are being greatly underestimated in comparison with real driving behaviour.

Since the European Union wants to reduce CO2 emissions in the future (fleet average: 130 g/km with effect from 2015, and 95 g/km from 2020 onwards), basing them on a new test cycle that more closely reflects reality is absolutely crucial.

The EU therefore wants to work closely together with other countries (Japan, the USA, India, China) to develop a new globally harmonised testing cycle to replace the existing NEDC by approximately 2017.

Worldwide Harmonised Light Vehicles Test Procedure (WLTP)

The Working Party on Pollution and Energy (GRPE), which was created by the World Forum for Harmonisation of Vehicle Regulations (WP.29) - a unit of the United Nations Economic Commission for Europe (UNECE) - has commenced work on the further development of the test procedure for light vehicles. Here, from the beginning of 2011 until the end of 2013, the FOEN assumed the chairmanship of an important body, namely the Informal Working Group on Worldwide Harmonised Light Vehicles Test Procedure (WLTP).

The WLTP comprises specialists from industry, science and public administration, who are currently developing a test procedure for emissions of CO2 and other pollutants from passenger cars, together with the corresponding regulations. The resulting procedure will then be subjected to a test phase for the purpose of verifying whether it functions in practice.

The EU aims to introduce the new test procedure together with the Euro 6c emissions standard from 2017 on.

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Last modification 25.03.2019

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