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INTRODUCTION ... [1-8]. Military personnel are among the people who are exposed to injuries and trauma caused by traffic accidents, which can have a direct and indirect impact on their long-term physical and mental health. Most of the studies have been done on the short-term health consequences of the injured person after the accident, which has led to disability [9, 10]. ... [11-17]. Injuries and occupational accidents are very common among the armed forces personnel and can lead to disability or even early retirement entailing huge costs for the armed forces. In the study by Charles S et al., 88,235 American soldiers were examined for physical injuries. The results of this study show that soldiers have the most musculoskeletal injuries that 82% of this type of injury is related to inflammation or pain [18]. The study by Clarke et al. also showed that in 2015, among the 60,228 members of the Australian Army, the most common causes of physical disability were due to ocular, musculoskeletal, and connective tissue disorders (18%) [19]. A proper understanding of the effects of long-term injuries and disabilities on the armed forces has not yet been achieved. Physical injuries are thought to be a major cause of disability in young people [12, 20]. Previous studies have shown that among police forces, traffic police officers have certain job stress and anxiety due to their job and service conditions [21]. AIM (s) The purpose of this study was to investigate the various physical injuries caused by traffic accidents that led to the disability of police officers. RESEARCH SOCIETY, PLACE, AND TIME The statistical population of this cross-sectional study was 404 cases of traffic police personnel whose disabilities were certified and registered by the Traffic Police of the Greater Tehran Headquarters from April 2016 to November 2021. USED DEVICES & MATERIALS Demographic information of disabled employees was taken out of the archived files in terms of age, service history, level of education, and type of membership. The frequency percent of traumatic accidents occurred by age group and work experience in conscripts from one month of service to 24 months and in the official forces with a history of 2-10, 10-20, and 20-35 years were examined. STATISTICAL ANALYSIS Data were analyzed using SPSS 26 software and descriptive and analytical indicators. The information was quantitative (continuous and discrete) and qualitative (nominal and rank) and inferential statistics were used to describe the demographic characteristics and the logistic regression test (Enter) was used to examine the relationship between the variables at a significance level of 0.05. FINDING BY TEXT From the 404 samples studied in the summary of demographic findings, 401 men and 3 women with a mean age of 36.05±7.88 years, 320 (79%) were Police Headquarter officers with a mean age of 37.5±6.33 years and 84 people (21%) were on military service with a mean age of 26.44±2.57 years (Table 1). The highest type of physical injury in traffic accidents that caused disability to police officers was related to musculoskeletal injury of the upper extremity (35.9%) and the lowest type of injury was related to lung and blood injury (0.2%). The most common type of physical injury among musculoskeletal injuries of the upper extremity was the hands (26.06%) and in the lower extremity was the leg (13.85%). All deaths during this period were related to conscripts (Table 2). The officers were in the age range of 20-60 years, with the highest number of injured persons in the age range of 20-30 years and the lowest in the age range of 50-60 years. Also, a higher percentage of people were in the service record with a range of 2-10 years (43.5%) and a lower percentage were in the service record of 20-35 years (15.5%). These results showed that with increasing work experience and age of traffic police staff, the number of injured people decreased (Table 3). Based on the education level regression logistics test (p