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Most manufacturers use Selective Catalytic Reduction (SCR) technology to reduce NOx emissions. SCR requires regular fill-ups of AdBlue, a specially-created chemical product which helps convert NOx into harmless emissions. But the compliance regime currently in place simply cuts engine power by 40% automatically if AdBlue runs out. There are fears that this alone is not enough to ensure drivers fill up their tanks. Furthermore, very few filling stations currently offer AdBlue for sale so lorries could be set to be pumping out high levels of NOx for some time to come.
This news story is taken from the October 2006 edition of T&E Bulletin.