Traffic accidents, by their nature, are random events; therefore, it is difficult to estimate the exact places and times of their occurrences and the true nature of their impacts. Although they are hard to precisely predict, preventative actions can be taken and their numbers (in a certain period) can be approximately predicted. In this study, we investigated the relationship between accident frequency and factors that affect accident frequency; we used accident data for events that occurred on a flat rural state road in Serbia. The analysis was conducted using five statistical models, i.e., Poisson, negative binomial, random effect negative binomial, zero-inflated Poisson, and zero-inflated negative binomial models. The results indicated that the random effect negative binomial model outperformed the other models in terms of goodness-of-fit measures; it was chosen as the accident prediction model for flat rural roads. Four explanatory variables—annual average daily traffic, segment length, number of horizontal curves, and access road density—were found to significantly affect accident frequency. The results of this research can help road authorities make decisions about interventions and investments in road networks, designing new roads, and reconstructing existing roads.

Hybrid warfare is an insufficiently defined term, both in theory and in security practice, which requires a more comprehensive scientific research into this new form of security threat. Hybrid war has become a challenge for military strategists and international relations, because it implies a complex conflict in which classic military operations are combined with asymmetric tactics, cyber attacks, propaganda and other non-military activities. This paper, through an interdisciplinary approach, analyzes the concept of hybrid warfare, its characteristics and dimensions, focusing on the evolution of armed conflicts, the integration of various means and techniques, changes in the command system, the role of special military units and robotic systems. In addition, the paper points to the international dimension of hybrid warfare, emphasizing the importance of cooperation between different actors in order to effectively counter hybrid threats. The aim of the paper is to provide an insight into the complexity and challenges that hybrid warfare presents, and to emphasize the necessity of developing new strategies and policies to combat hybrid threats, preserve peace and security.