Rotterdam's measures have been so successful that the city is able to allow older petrol cars back in the Low Emission Zone.

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Central Stockholm will have a low emission zone for cars, vans and minibuses from 15 January 2020

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EU project ReVeAL to help cities improve liability through Urban Vehicle Access Regulations

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Stuttgart Smog Alarm is triggered from 3 December 2019. 

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Lorry low emission zone on the A12 motorway in Austria tightens to Euro 5

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The London Ultra LEZ has reduced NO₂ by 32 µg/m³, traffic by 9%, CO2 by 13%

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Stuttgart Smog Alarm period starts again on 15 October 2019 for 6 months.

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Stockholm will have a Euro 6 low emission zone in a part of the city center from 15 January 2020 on.

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Milan Area C tightens to petrol: Euro 2; Area B tightens to diesel: Euro 4 on 1 October 2019.

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