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The number of traffic accidents in the city of Surabaya increases every year, and the main cause of traffic accidents is the human factors. Total of accidents that occurred during 2016 were 1,126 accidents and in 2017 there were 1,349 accidents which caused 174 people died, 144 people were seriously injured and 1,433 people were lightly injured. In this research, road accident data in 2013-2017 were analyzed to calculate Accident Rates, then determine accident-prone areas (blacksite) with the Z-Score method, determine accident-prone points (blackspot) using the Cumulative Summary (Cusum) method, and calculation the unit cost of accident victims is carried out by using the Gross Output (Human Capital) method. From the analysis of Z-Score, it is known that three road segments are blacksite in the city of Surabaya, namely Ahmad Yani road, Mastrip road, and Ir.Soekarno road. Blackspot on Ahmad Yani road as a road with the highest number of accidents is at STA 1+025 - STA 2+275. The road that have the highest accident costs is Mastrip road, which is costs Rp.6.507.597.751,00.