Aksincha, 30km/soat tezligida harakatlanayotgan mashinalar taxminan 15 foiz ko'proq ifloslantiradi: https://www.ouest-france.fr/economie/automobile/30-km-h-in-city-less-or-more-polluting-on-you-answer-5ff42038-14a1-11ec-b2d1-d57c7be57e12
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