This study was conducted to investigate accident-prone roads in Palu City. The method used is direct observation on the road which shows the frequent occurrence of traffic accidents based on traffic accident data obtained from the Municipal Police Offices (Polres). Based on the results of the study showed that 19 roads often occur traffic accidents. R.E Martadinata Sub Districts Tondo (25.07%), Trans Sulawesi Sub Districts Taipa (11.21%), and Trans Sulawesi Sub Districts Mamboro (7.08%) are the most accident-prone roads in Palu City. These three roads are included in the national road network as the primary arterial roads of Palu City. The final result of this study shows that accident-prone roads can be caused by poor pavement road conditions, high side frictions, and poor environmental conditions and visibility.