Officials from the north German city were awaiting a court ruling as to whether they could ban cars up to and including Euro 5 diesels, or extend to pre-Euro-6 cars (pre-2014). The less strict ban will be implemented.
The ban will come into effect on 31 May, with around 100 signs already in place directing older diesels away from two streets in the city, suggesting alternative routes. Critics suggest that this may be counter-intuitive, forcing older, dirtier diesels to drive further in the city centre to get to their destination.
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