Motorcycle Accident Scenarios and Post-Crash Kinematics of Motorcyclists in Thailand

J. Carmai, S. Koetniyom, W. Sungduang, K. A. Abu Kassim and Y. Ahmad

Abstract: This paper unveils a classification of motorcycle accident data in Thailand to identify common accident scenarios and impact parameters for multibody dynamics simulation of motorcycle crashes. The simulation results were analysed in terms of kinematics of riders and passengers as well as head impact locations. Motorcycle accident data revealed that rolling over without any contact with other vehicles was the most common scenario, while the side swipe was the most common type of crash involving other vehicles. The majority of accidents involved passenger cars with riders’ age ranging between 10-29 years. Serious and severe injuries accounted for 20% of the total number of casualties whereas minor abrasions and bruise accounted for 41%. Four common accident scenarios were identified together with a range of impact speeds, impact angles and impact points to generate impact conditions for multibody simulations. The simulation results revealed two patterns of global kinematics including (i) the rider together with the child pillion passenger were laterally projected towards the other vehicle as the other vehicle hit the lateral side of the motorcycle; and (ii) the rider together with the child pillion were launched forward in the direction of impact when the front wheel of the motorcycle hit the other vehicle. The vehicle hood was found to be the most frequently impacted area by the rider’s and child passenger’s head. The car windshield was the second most frequently impacted location for the rider’s head. For pick-up truck, the passenger window was the second most frequent area of impact. There was a moderate number of A-pillar contact on the car but such a situation was rare for the pick-up truck.

Keywords:Motorcycle accidents, accident scenario, post-crash kinematics, head impact location

References

AAAM (2008). Abbreviated injury scale (AIS) 2005 – Update 2008. Barrington, IL: Association for the Advancement of Automotive Medicine (AAAM).

Department of Land Transport Thailand (2017). Government open statistical data. Retrieved from www.data.go.th

Fiest, F., Gugler, J., Arregui-Dalmases, C., del Pozo de Dios, E., López-Valdés, F., Deck, C., & Willinger, R. (2009). Pedestrian collisions with flat-fronted vehicles: Injury patterns and importance of rotational accelerations as a predictor for traumatic brain injury (TBI). Paper presented at the 21st International Technical Conference on the Enhanced Safety of Vehicles Conference (ESV), Stuttgart, Germany.

Kantipong, K. (2015). Thailand motorcycle accident situation. Paper presented at the 70th Session of UNECE Road Safety Forum. Retrieved from http://www.unece.org/ fileadmin/DAM /trans/doc/2015/wp1/ECE-TRANS-WP1-2015-Presentation-13.pdf

Karnjanapollert, P., Koetniyom, S., & Carmai, J. (2018). The use of multibody dynamics simulations to investigate motorcyclist kinematics and injuries in accidents. Paper presented at the 14th International Conference of Automotive Engineering, Muang Thong Thani, Pak Kret, Thailand.

Kasantikul, V. (2002). Motorcycle accident causation and identification of countermeasures in Thailand: Volume I: Bangkok study. Retrieved from http://www.mosac.eu/public/file/Kasantikul%20Motorcycle%20Accident%20Research%20in% 20Thailand%20-%20Bangkok%202002.pdf

Magriet, V.S., Stefanie, H., Radarius, C., & Fredriksson, R. (2012). Cyclist kinematics in car impacts reconstructed in simulation and full scale testing with Polar dummy. Proceeding of International Research Council on Biomechanics of injury (IRCOBI), 800-812. Retrieved from http://www.ircobi.org/wordpress/downloads/irc12/pdf_files/85.pdf

Otto, D. (1989). Injury mechanism and crash kinematics of cyclists in accidents-an analysis of real accidents. Paper presented at the 33rd Stapp Car Crash Conference, Warrendale, PA, USA.

Otto, D. (2004). Use of thrown distances of pedestrians and bicyclists as part of a scientific accident reconstruction method. Paper presented at SAE 2004 World Congress & Exhibition, Detroit, Michigan. USA.

Rohit, B. (2016). Powered two wheelers safety in the South East Asian-region. Paper presented at Europe-Asia Road Safety Forum 2016. Retrieved from https://www.unece.org/fileadmin/DAM/trans/doc/2016/wp1/ECE-TRANS-WP1-73- Presentation-7e.pdf

Save the Children Thailand (2014). The 7% Project, 2014. Retrieved from http://www.7- percent.org/about/

Untaroiu, C., Meissner, M., Cradall, J.R., & Takahashi, Y. (2009). Crash reconstruction of pedestrian accidents using optimization techniques. International Journal of Impact Engineering, 36(2), 210-219.

Untaroiu, C., Cradall, J.R., Takahashi, Y., Okamoto, M., Ito, O., & Fredriksson, R. (2010). Analysis of running child pedestrians impacted by vehicle using rigid body models and optimization techniques. Safety Science, 48(2), 259-267.

Watson, J., Hardy, R., & Kayvantash, K. (2009). Understanding the nature of cyclist’s head impacts. Proceeding of International Research Council on Biomechanics of Injury (IRCOBI), 301-314.

WHO (2015). Global status report on road safety 2015 – Supporting a decade of action. Geneva, Switzerland: World Health Organization (WHO). Retrieved from http://www.who.int/violence_injury_prevention/ road_safety_status /2015/en/

WHO (2017). Powered two- and three- wheeler safety – a road safety manual for decision makers and practitioner. Geneva, Switzerland: World Health Organization (WHO). Retrieved from http://apps.who.int/iris/bitstream/10665/254759/1/9789241511926-eng.pdf