Source: https://sig.dinan-agglomeration.fr/docs/plu/PLANCOET_PLU/Pi%C3%A8ces%20%C3%A9crites/4_Annexes/9%20-%20SDIS%20-R%C3%A8gles%20desserte%20et%20d%C3%A9fense%20incendie%20ext%20B%C3%A2timents.pdf