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In-depth Accident Investigation: Case Studies in Motorway of Department of Highways Thailand

Atitep Srikongsri 1, Tassana Boonyoo 2, Chalat Tipakornkiat 3, Usanee Raha 4, and Kraisri Tippayawong 5
1. Graduate School, Kasem Bundit University, Bangkok, Thailand
2. Traffic and Transport Development and Research Center (TDRC), King Mongkut’s University of Technology Thonburi, Bangkok, Thailand
3. Department of Civil Engineering, Faculty of Engineering, Rajamangala University of Technology Srivijaya, Songkhla
4. Faculty of Engineering at Ramkhamheang University
5. Autrans, Co., Ltd., Bangkok, Tha

Abstract—Accident investigation (AI) aim to answer what, how, why, when of accident happens. Moreover, we need to know what can be done to prevent a reoccurrence and what can be done to minimize accident consequences. Thirteen serious accidents were in-depth investigated by an expert team. Almost accident factors were human errors which occurred in daytime. Human errors are doze off, lack of driving experience, speeding and suddenly brake and lane changing of passenger drivers and pickup drivers. Accident causes by vehicle defects are related with wheel system such as exploding of tire and malfunction of braking system. Severity level could be reduced by fasten seatbelt, lower speed, non-illegal parking, truck protection system, reinstall and redesign of guardrail, crash cushion providing and budget allocation. We suggest engineering, education and law enforcement to minimize accident consequences. 

Index Terms—accident investigation, inter city motorway, safer road

Cite: Atitep Srikongsri, Tassana Boony, Chalat Tipakornkiat, Usanee Raha, and Kraisri Tippayawong, "In-depth Accident Investigation: Case Studies in Motorway of Department of Highways Thailand," International Journal of Structural and Civil Engineering Research, Vol. 9, No. 1, pp. 95-100, February 2020. doi: 10.18178/ijscer.9.1.95-100