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01 09 2017 01

Two new tests for measuring emissions from cars and vans will come into force in the EU tomorrow. The new laboratory test, the Worldwide Harmonized Light Vehicle Test Procedure (WLTP), will introduce more realistic testing conditions for measuring pollutant and CO2 emissions than the previous, outdated lab test (NEDC). It thus provides a more accurate basis for measuring a vehicle’s fuel consumption and emissions.

The real driving emissions (RDE) test, which measures pollutant emissions on the road, also applies as of tomorrow, making Europe the only region in the world to implement such mandatory testing. Under RDE, a car will be driven on public roads over a wide range of conditions using portable measuring equipment (PEMS). RDE will complement WLTP to ensure that pollutant emission levels, measured during the laboratory test, are confirmed on the road.

WLTP. A Global Technical Regulation (GTR) on WLTP was developed and finally adopted by UNECE’s World Forum for Harmonization of Vehicle Regulations in March 2014, at the request of policy makers, the automobile industry and consumers. However, GTRs require incorporation into national or regional legal frameworks before they can be applied.

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