1. Chaudhuri U, Ratnapradipa K, Shen S, Rice Th, Zhu M et al. Trends and patterns in fatal US motorcycle crashes, 2000-2016. Traffic Inj Prev. 2019;20(6):641-7. https://doi: 10.1080/15389588.2019.1628224 [DOI:10.1080/15389588.2019.1628224] [PMID] [PMCID]

2. Borhan M.N, Brahim Hakim A, Aziz A, Mat Yazid R.The relationship between the demographic, personal, and social factors of Malaysian motorcyclists and risk taking behavior at signalized intersections. Accid Anal Prev. 2018;121:94-100. [DOI:10.1016/j.aap.2018.09.004] [PMID]

3. Nickenig Vissoci J.R, Krebs E, Meier B, Vieira F, Andrade L et al. Road traffic crash experience among commercial motorcyclists in Kigali, Rwanda. Int J Inj Contr Saf Promot. 2020;27(2):181-7. https://doi:10.1080/17457300.2020.1724158 [DOI:10.1080/17457300.2020.1724158] [PMID] [PMCID]

4. Haworth N, Greig K, Nielson A. Comparison of risk taking in moped and motorcycle crashes. Transport Res Rec. 2009;2140(1):182-7. [DOI:10.3141/2140-20]

5. Mayrose J. The effects of a mandatory motorcycle helmet law on helmet use and injury patterns among motorcyclist fatalities. J Safety Res. 2008;39(4):429-32. [DOI:10.1016/j.jsr.2008.07.001] [PMID]

6. Fowles R. Loeb P.D. Sturdy Inference: A Bayesian analysis of US motorcycle helmet laws. J Transp Res F. 2016;55:41-63. https://ideas.repec.org/a/ags/ndjtrf/262667.html [DOI:10.5399/osu/jtrf.55.3.4403]

7. Heydari S.T, Lankarani K, Vossoughi M, Javanmardi K, Sarikhani Y, Mahmoudi M et al. The prevalence and effective factors of crash helmet usage among motorcyclists in Iran. J Inj Violence Res. 2016;8(1):1-5. doi:10.5249/jivr.v8i1.667 [DOI:10.5249/jivr.v8i1.667]

8. Dee T.S. Motorcycle helmets and traffic safety. J Health Econ. 2009;28(2):398-412. [DOI:10.1016/j.jhealeco.2008.12.002] [PMID]

9. Seied Abrishami E, Ghouchanian M, Boroujerdian A, Zavareh M. Analysis and modeling of factors affecting the use of helmets by motorcyclists, Case study: Mashhad. J Transp Eng. 1393;6(2):289-302. [Persian]. https://dorl.net/dor/20.1001.1.20086598.1393.6.2.8.5 10- Kazemian, M., M. Movahhedi, and F. Movahhed, Facial fracture types in motorcyclists with and without Helmet in Southeast of Iran. J Mash Dent Sch. 2019;43(3):295-303 [Persian]. https://www.sid.ir/en/Journal/ViewPaper.aspx?ID=723627

10. Santos W.J, Silva M, Santos B, Ceballos C. Work overload and risk behaviors in motorcyclists. Rev Bras Enferm. 2019;72(6):1479-84. [DOI:10.1590/0034-7167-2018-0279] [PMID]

11. Rajkumar C, and S.K. Mahendran. Enhanced key frame identification and background subtraction methods for automatic license plate recognition of motorcyclists without helmets. Mater Today. 2021;64(4). [DOI:10.1016/j.matpr.2020.10.241]

12. Graneheim U.H, Lundman B. Qualitative content analysis in nursing research: concepts, procedures and measures to achieve trustworthiness. Nurse Educ Today. 2004;24(2):105-112. [DOI:10.1016/j.nedt.2003.10.001] [PMID]

13. Barusch A, Gringeri CH, George M. Rigor in qualitative social work research: A review of strategies used in published articles. Soc Work Res. 2011;35(1):11-19. [DOI:10.1093/swr/35.1.11]

14. Kumphong J, Satiennam T, Satiennam W. The determinants of motorcyclists helmet use: Urban arterial road in Khon Kaen City. Thailand J Safety Res. 2018;67:93-7. [DOI:10.1016/j.jsr.2018.09.011] [PMID]

15. Merali H, Bachani A. Factors associated with child passenger motorcycle helmet use in Cambodia. Int J Inj Contr Saf Promot. 2018;25(2):134-40. [DOI:10.1080/17457300.2017.1345948] [PMID]

16. Siebert F, Hellman LW, Raj Pant P, Lin H, Trimpop R. Disparity of motorcycle helmet use in Nepal-Weak law enforcement or riders' reluctance? Transp. Res F: Traffic Psychol. Behav. 2021;79:72-83. [DOI:10.1016/j.trf.2021.04.005]

17. Ofitserov A, Blatin S. Conceptual aspects of improving legislation and law enforcement practice in use of robot systems to ensure traffic safety in large cities. Transp. Res Proc. 2020;50:507-17. https:// doi.org/10.1016/j.trpro.2020.10.060 [DOI:10.1016/j.trpro.2020.10.060]

18. Akl Z, Aki M, Eriksson Ch, Gifford M, Koustuv D. Evaluating Helmet Use Among Motorcycle Drivers in Lebanon. The Open Public Health J. 2018;11(1):393-400. https:// doi: 10.2174/1874944501811010393 [DOI:10.2174/1874944501811010393]

19. Zamani-Alavijeh F, Niknami Sh, Mohammadi E, Montazeri A, Ahmadi F et al. Motorcyclists' reactions to safety helmet law: a qualitative study. BMC public health. 2009;9(1):1-8. https:// doi:10.1186/1471-2458-9-393 [DOI:10.1186/1471-2458-9-393] [PMID] [PMCID]

20. Amos I.O. Police As A Gate-Keeper And The Use Of Discretional Power In Criminal Justice System In Nigeria. Depart Sociol NIGERIA POLICE. 2014:1-15. file:///C:/Users/1/Desktop/Downloads/2014-POLICEASAGATE-KEEPERANDTHEUSEOFDISCRETIONALPOWERINCJSINNIG.pdf

21. Chiu W, Chu F, Chang K et al. Implementation of a motorcycle helmet law in Taiwan and traffic deaths over 18 years. JAMA. 2011;306(3):267-8. https:// doi:10.1001/jama.2011.989 [DOI:10.1001/jama.2011.989] [PMID]

22. Siebert F.W, Albers D, Naing A, Perego P, Santikarn Ch. Patterns of motorcycle helmet use-A naturalistic observation study in Myanmar. Accid Anal Prev. 2019;124:146-50. [DOI:10.1016/j.aap.2019.01.011] [PMID]

23. Ranaei V.Z, Hosseini Z, Dadipoor S. Barriers to using a helmet among motorcyclist students: a qualitative study. J Inj Violence Res. 2021;13(2):81. https:// doi: 10.5249/jivr.vo113i2.1543 [DOI:10.5249/jivr.v13i2.1543]

24. Janfada H, Farahzadi M, Soarayani F, Lotfi M, Falahzadeh R. The relationship between motorcycle riders causing traffic accidents, personality disorders and drug abuse. J Inj Violence Res. 2019;11(2):99. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC718707 26- Agustin I.W. Traffic violation are mostly carried out by motorcyclist. Indonesia. (Conference). 2019. [DOI:10.1063/1.5141731]

25. Maghsoudi A.D, Boostani D. Rafeiee M. Investigation of the reasons for not using helmet among motorcyclists in Kerman, Iran. Int J Inj Contr Saf Promot. 2018;25(1):58-64. [DOI:10.1080/17457300.2017.1323931] [PMID]