This thesis investigated the instabilities that occur on roads. Investigated roads are state roads D32 which connects Delnice and Prezid, the section of Gerovo to Tršće and local roads connecting the 58007 Gerovo and Hrib. These roads are located in Gorski kotar, in the town of Čabar. Area town of Čabar is located in the western part of the Croatian, near the border with Slovenia. This is a micro-regions, which is located in the northwestern part of Gorski kotar, in the north of Primorje - Gorski Kotar County. It takes almost a quarter of the area of Gorski kotar. This area has an unfavorable geographical position in transport due to the higher altitude and difficult winter conditions. First step was collecting the data for the researched location (topographic maps, geological map and orthophoto shots), followed by site visit, which included locating and photographing the instabilities positions using GPS device and camera. Instabilities are observed on the state road D32, section Smrečje - Tršće and on the local road Gerovo – Hrib. Field research has shown that landslide hazard is present in the research area. Hazard is potentially harmful phenomena that can threaten humans and can cause injury, death, damage to their property and damage to the community. It is expressed as a probability of landslide occurrence, where landslide intensity, the hazard area and specific period of landslide occurrence are defined. The area of investigation is located in Upper Paleozoic deposits which consist of flysch-like series clastics, in which alternating conglomerates, sandstones, siltstones and shales. Intensive geomorphological processes are present on these terrains, especially erosion and mass movements on the slopes. Sliding, soil creep and rock falls are present and evident on slopes in the area. This thesis it has been found that the instability resulting from the action of intense precipitation (rain, snow and freezing rain) in combination with the conditions on the slopes, but they are more pronounced in ruinous materials.