International Scientific Journals
of Scientific Technical Union of Mechanical Engineering "Industry 4.0"

This paper examines the technical validity of motorcycles and mopeds registered in the Republic of Croatia as a factor of road safety, analysing data from the Centre for Vehicles of Croatia (CVH) for the period 2023–2025. The study focuses on three dimensions: the age structure of the registered L category vehicle fleet, aggregate periodic technical inspection (PTI) defect data for all L category vehicles in 2025, and disaggregated inspection outcomes for L1 (mopeds) and L3 (motorcycles) subcategories. Results indicate that the Croatian PTW fleet is structurally aged, with over 57% of vehicles exceeding ten years of age in 2025. The overall PTI failure rate stands at 8,28%, with mopeds recording a substantially higher rate of 10,79% compared to 6,73% for motorcycles. The most prevalent defect categories are lighting and signalling devices (32,64%) and tires and suspension (25,15%). The findings highlight the need for strengthened PTI enforcement and targeted public awareness campaigns.

With more than 1.35 million fatalities worldwide each year, road crashes are among the world’s most significant public health and injury prevention problems. In the last decade, with the new technological breakthroughs, a significant effort has been devoted to improving different safety systems related to infrastructure and vehicles. Road marking and road signs represent main road elements whose main task is to provide timely and necessary information to the drivers related to the upcoming situation. In other words, they warn and inform drivers about the conditions and construction characteristics of the road, guide road users through the traffic network and regulate traffic in a safe way. Therefore, continuous monitoring and testing of their quality is of great importance for road safety in general. The a im of this paper is to present Croatian experience regarding the quality testing of road markings and signs in last decade. Overall, the analysis confirmed that systematic control of road markings and signs will positively affect their quality and optimize maintenance activities