Patterns of road traffic fatalities in the six most populous provinces of Iran, 2011–2015


1 Department of Transportation Engineering, School of Civil Engineering; Road Safety Research Centre, Iran University of Science and Technology, Tehran, Iran

2 Road Safety Research Centre, Iran University of Science and Technology, Tehran, Iran


Background: The aim of this study was to compare the traffic safety condition as well as monthly pattern of fatalities in the six most populated provinces in Iran. Materials and Methods: This was a descriptive study. The data pertaining to fatalities and injuries during 2011–2015 were obtained from Iran Legal Medicine Organization. Results: Fatalities per 100,000 population in Kerman and Fars were significantly higher than the other four provinces, and Tehran had the lowest fatality rate per 100,000 population. To control for exposure, the number of fatalities per 100 injuries was calculated as an indicator of crash severity in the six provinces. The crashes were found to be more severe in Kerman (7.72 fatalities per 100 injuries) and Fars (5.97 fatalities per 100 injuries) compared to the other four provinces. Moreover, monthly pattern of fatalities was found to be significantly different among the six provinces. Conclusion: Results revealed several differences in the fatality patterns with the Kerman and Fars provinces having the most critical situation in the road safety among the six provinces. This could be due to the differences among these provinces in (1) quality and quantity of emergency and medical services, (2) road safety status, or (3) the share of vulnerable road user fatalities. Finally, our results suggest that to improve the efficiency and effectiveness of policies and countermeasure regarding traffic safety, policy-makers should consider the differences in the safety status and fatality patterns at provincial level.


1. Tavakoli Kashani A, Rabieyan R, Besharati MM. Modeling the effect of operator and passenger characteristics on the fatality risk of motorcycle crashes. J Inj Violence Res 2016;8:35‑42. 
2. Tavakoli Kashani A, Rabieyan R, Besharati MM. A data mining approach to investigate the factors influencing the crash severity of motorcycle pillion passengers. J Safety Res 2014;51:93‑8. 
3. Kashani AT, Besharati MM. Fatality rate of pedestrians and fatal crash involvement rate of drivers in pedestrian crashes: A case study of Iran. Int J Inj Contr Saf Promot 2017;24:222‑31. 
4. Tavakoli Kashani A, Besharati MM. An analysis of vehicle occupants’ injury severity in crashes occurred on rural freeways and multilane highways in Iran. Int J Transp Eng 2016;4:137‑46. 
5. Nordfjærn T, Jørgensen SH, Rundmo T. Safety attitudes, behaviour, anxiety and perceived control among professional and non‑professional drivers. J Risk Res 2012;15:875‑96. 
6. Öz B, Özkan T, Lajunen T. Professional and non‑professional drivers’ stress reactions and risky driving. Transportation research part F: Traffic Psychol Behav 2010;13:32‑40. 
7. World Health Organization. Global Status Report on Road Safety: World Health Organization; 2018. 
8. Mirzaei M, Mirzadeh M, Shogaei Far H, Mirzaei M. Trends in road traffic deaths in Yazd, Iran, 2004‑2010. Arch Trauma Res 2016;5:e29266. 
9. de Andrade L, Vissoci JR, Rodrigues CG, Finato K, Carvalho E, Pietrobon R, et al. Brazilian road traffic fatalities: A spatial and environmental analysis. PLoS One 2014;9:e87244. 
10. Naghavi M, Shahraz S, Bhalla K, Jafari N, Pourmalek F, Bartels D, et al. Adverse health outcomes of road traffic injuries in Iran after rapid motorization. Arch Iran Med 2009;12:284‑94. 
11. Nofal FH, Saeed AA. Seasonal variation and weather effects on road traffic accidents in riyadh city. Public Health 1997;111:51‑5. 
12. Sivak M. During which month is it riskiest to drive in the United States? Traffic Inj Prev 2009;10:348‑9. 
13. Farmer CM, Williams AF. Temporal factors in motor vehicle crash deaths. Inj Prev 2005;11:18‑23. 
14. Khorshidi A, Ainy E, Hashemi Nazari SS, Soori H. Temporal patterns of road traffic injuries in Iran. Arch Trauma Res 2016;5:e27894. 
15. Heydari ST, Hoseinzadeh A, Sarikhani Y, Hedjazi A, Zarenezhad M, Moafian G, et al. Time analysis of fatal traffic accidents in Fars province of Iran. Chin J Traumatol 2013;16:84‑8. 
16. Mohammadian M, Packzad R, Salehiniya H, Khazaie S, Nematollahi S, Pishkuhi A, et al. Seasonal pattern in occurrence and in‑hospital fatality rate from traffic accidents in Isfahan, Iran. Int J Epidemiol Res 2015;2:126‑33. 
17. Sanaei‑Zadeh H, Vahabi R, Nazparvar B, Amoei M. An epidemiological study and determination of causes of traffic accident‑related deaths in Tehran, Iran (during 2000‑2001). J Clin Forensic Med 2002;9:74‑7. 
18. Mahdian M, Sehat M, Fazel MR, Moraveji A, Mohammadzadeh M. Epidemiology of urban traffic accident victims hospitalized more than 24 hours in a level III trauma center, Kashan county, Iran, during 2012‑2013. Arch Trauma Res 2015;4:e28465. 
19. Mohammadi G. Road traffic crash injuries and fatalities in the city of Kerman, Iran. Int J Inj Contr Saf Promot 2013;20:184‑91. 
20. Bergel‑Hayat R, Zukowska J. Road safety trends at national level in Europe: A review of Time‑series analysis performed during the period 2000–12. Transp Rev 2015;35:650‑71. 
21. Hakkert AS, Braimaister L, van Schagen I. The uses of exposure and risk in road safety studies. SWOV Institute for Road Safety; 2002. 
22. Peltola H, Rajamäki R, Luoma J. A tool for safety evaluations of road improvements. Accid Anal Prev 2013;60:277‑88. 
23. Chandran A, Sousa TR, Guo Y, Bishai D, Pechansky F; Vida No Transito Evaluation Team. Road traffic deaths in brazil: Rising trends in pedestrian and motorcycle occupant deaths. Traffic Inj Prev 2012;13 Suppl 1:11‑6.