International Journal of Occupational Hygiene 2016. 8(4):208-216.

Road Accident Modeling by Fuzzy Logic based on Physical and Mental Health of Drivers




Drivers are vulnerable to musculoskeletal and psychological disorders because of substantially harmful agents in this stressful occupation. This study aimed to investigate the influence of driver’s physical and psychological health on the risk of road accidents using fuzzy logic approach. Two input variables including musculoskeletal disorders (MSDs) and mental health, alongside accident risk levels as output variables were fuzzed using a fuzzy inference system (FIS). Triangular and trapezoid membership functions were used to graphically define outputs related to low, moderate, high and very high, in fuzzy sets. A Mamdani-type FIS was applied to represent all the rules in the IF-THEN format and the patterns of linguistic variables were designed using AND, OR and NOT operators. There was significant relationship between MSDs and psychological health with road accidents involving drivers of heavy vehicles (P<0.05). Besides, surface graphs illustrated the relationship between MSDs, psychological health and accident risks. FIS as a novel approach was used for predication of accident risk levels involving drivers of heavy vehicles based on health factors. Physical and psychological health can influence the safe operation of heavy vehicle drivers. The fuzzy inference system provided a method that is advantageous and with promising results for modeling of road accident risk levels on the basis of driver’s physical and mental health.


Physical and psychological health, Heavy vehicle drivers, Road accidents, Fuzzy inference system

Full Text:



Abdolmalki A, Farshad A, Bagheri Yazdi S, Nosrati M, Hamedani M, Mohamadi A. Study of lead effects on the mental health of tin laborers in a carmaking company of Tehran city 2007. Iran Occup Hea J 2009; 6(2): 26-30.

Boruchovitch E, Mednick BR. The meaning of health and illness: some considerations for health psychology. Psico-USF 2002; 7(2): 175-83.

Aghilinejad M FA, Mostafaei M, Ghafari M. Occupational medicine practice. 1st ed. Arjomand: Tehran, Iran; 2001. 3-12 p.

Sadeghi N, Habibi E. The survey of relation between Musculoskeletal Disorders and Anthropometric Indices in the bus drivers in Isfahan. Iran Occup Hea J 2009; 6(1): 6-14.

Mehdi Jahangiri, Ali Karimi , Samira Slamizad, Mohammad Olyaei, Sekhavat Mosavi, Fatemeh Amiri: Occupational risk factors in Iranian professional drivers and their Iimpacts on traffic accidents. Int J Occup Hyg, 2013, 5(4): 184-190.

Mohammad Javad Jafari, Ali Karimi, Maryam Haghshenas: Extrapolation of experimental field study to a national occupational noise exposure standard. Int J Occup Hyg, 2010, 2 (2), 63-68.

Ustakhan M, Mofidi A, Meshkani M. Safety level assessment in the production environment using Fuzzy logic. JHSW 2012; 2(1): 63-74.

Dutta S, Sheikh TA, Baruah S, Sharma P, Roy S. Accident Control Using Fuzzy Logic: Survey. EJAET 2016; 3(1): 62-5.

Pinto A, Ribeiro RA, Nunes IL. Fuzzy approach for reducing subjectivity in estimating occupational accident severity. Accid Anal Prev 2012; 45: 281-90.

Mosavy M. The comparative study of health status of medical students and para-medical students trainee. Journal of Gorgan University of Medical Sciences 2004; 6(1): 101-7.

Zimmermann H-J. Fuzzy set theory—and its applications. 4th ed. Springer Science & Business Media: New York, USA; 2011.

Ross TJ. Fuzzy logic with engineering applications. 3rd ed. John Wiley & Sons: NewMexico, USA; 2009.

Kiani M, Mohammad FI, Allahviranloo T. Identification and evaluation of performance indicarotrs affecting human error, based on fuzzy logic (an operation center of gas transmission company). J Occup Med 2014; 5(4): 60-7.

Beriha G, Patnaik B, Mahapatra S, Padhee S. Assessment of safety performance in Indian industries using fuzzy approach. Expert Syst Appl 2012; 39(3): 3311-23.

Qiao Y, Keren N, Mannan MS. Utilization of accident databases and fuzzy sets to estimate frequency of HazMat transport accidents. J Hazard Mater 2009; 167(1): 374-82.

Backman A-L, Järvinen E. Turnover of professional drivers. Scand J Work Env Hea 1983: 36-41.

Luepker RV, Smith ML. Mortality in unionized truck drivers. J Occup Environ Med 1978; 20(10): 677-82.

Thirlaway K, Benton D. Participation in physical activity and cardiovascular fitness have different effects on mental health and mood. J Psychosom Res 1992; 36(7): 657-65.


  • There are currently no refbacks.

Creative Commons Attribution-NonCommercial 3.0

This work is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported License which allows users to read, copy, distribute and make derivative works for non-commercial purposes from the material, as long as the author of the original work is cited properly.