The Danish government has called on the European Commission to develop new rules for member states after its testing revealed that lorries equipped with widely available cheating devices have up to 45 times higher NOx emissions than those with a properly functioning cleaning system.
Cheating typically occurs when electronic emulator devices are used to disconnect the engine emission reduction system.
In a letter to the EU commissioners for transport, environment and internal market, Danish ministers said there was evidence of distributors of emulators recommending customers remove particulate filters which would result in high emissions of carcinogenic diesel soot.
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