Burkhard Maria Zimmermann<p>'In 1992, the first “<a href="https://mastodon.social/tags/Euro" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Euro</span></a>” standards for <a href="https://mastodon.social/tags/vehicles" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>vehicles</span></a> were put into force. These standards — which applied to all countries in the <a href="https://mastodon.social/tags/europeanunion" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>europeanunion</span></a> plus <a href="https://mastodon.social/tags/Norway" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Norway</span></a>, <a href="https://mastodon.social/tags/Iceland" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Iceland</span></a>, and <a href="https://mastodon.social/tags/Liechtenstein" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Liechtenstein</span></a> — were designed to reduce <a href="https://mastodon.social/tags/emissions" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>emissions</span></a> of harmful local air <a href="https://mastodon.social/tags/pollutants" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>pollutants</span></a>, including <a href="https://mastodon.social/tags/NOx" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>NOx</span></a>. </p><p>All new vehicles sold in these countries had to be below these emission limits, and these standards were tightened over time. “Euro 1” was launched in 1992, and we’re now on <a href="https://mastodon.social/tags/Euro6" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Euro6</span></a> standards.' <br> <br><a href="https://ourworldindata.org/cleanest-air-lessons?utm_source=OWID+Newsletter&amp;utm_campaign=92e91e8a2b-biweekly-digest-2025-02-21&amp;utm_medium=email&amp;utm_term=0_-0c7f305164-267944929" rel="nofollow noopener noreferrer" target="_blank"><span class="invisible">https://</span><span class="ellipsis">ourworldindata.org/cleanest-ai</span><span class="invisible">r-lessons?utm_source=OWID+Newsletter&amp;utm_campaign=92e91e8a2b-biweekly-digest-2025-02-21&amp;utm_medium=email&amp;utm_term=0_-0c7f305164-267944929</span></a></p>