This study focuses on the increasing danger posed by pedestrians using mobile devices at signalized crossings in urban areas. Conducted in Kielce, the research involved detailed observations at five high-traffic intersections to assess the frequency and impact of distracted pedestrian behavior. The findings show a concerning rise in the use of mobile phones while crossing the street. Specifically, 32% of pedestrians were observed using their phones, whether for texting, browsing, or making calls. This behavior significantly contributed to unsafe situations, with 4% of those observed crossing against a red light, creating potentially hazardous conditions for both pedestrians and drivers. The study highlights how mobile phone use impairs pedestrians’ ability to concentrate on their surroundings, reducing their awareness of traffic signals, oncoming vehicles, and other potential hazards. These distractions can lead to longer reaction times and poor decision-making when crossing roads, which increases the risk of accidents. In response, the research emphasizes the need for immediate action to improve pedestrian safety at urban crossings. Potential solutions include public awareness campaigns, stricter enforcement of traffic laws, and even technological solutions, such as signal systems that alert pedestrians when they are distracted. Addressing this issue is crucial to reducing the growing number of accidents related to mobile device use at pedestrian crossings.