The city of Trogir has a long tradition of firefighting and awareness of the dangers caused by fire. Although there has been a Voluntary firefighting association for more than century, which, within its limits and capabilities performed its obligations regarding firefighting and preventive measures for the area of Trogir, from May 10, 2019., with the establishment of the Public Fire Department of the City of Trogir, the prevention of fire and firefighting rose to higher level. With the very establishment of the Public fire department Trogir, local authorities accepted their role more seriously in firefighting system. Rights and obligations, regulations, plans and other documents related to the role and obligations of local authorities in the firefighting system will be listed in the introductory part of the thesis. Furthermore, we will explain which preventive activities are undertaken by the local authorities, and ilustrate them in the example of the City of Trogir; first through the analysis of Assessment of fire risk and technological explosions for the City of Trogir, followed by the analysis of preventive activities undertaken by fire brigades from the area of the City of Trogir. In the final part of the paper, a number of proposals, both organizational and technical measures will be mentioned, which, in my opinion, would increase security against outbreakes and spread of fire in the area of the City of Trogir.