The results might be helpful for effective measures suggestion to improve traffic safety at signalized intersections. A case study is conducted in Ho Chi Minh City (HCMC), Vietnam. Historical traffic accident data in the city are collected during five years (2011-2015). Binary logit models have been used to identify contributing factors to serious traffic accident. The results show that the involvement of intersection type, land use and road type are contributing factors to the accident severity. Based on the findings, strategies and measures for safety improvement are formulated and discussed. | Determining the contributing factors to traffic accident in Ho Chi Minh city using binary logit model