Abstract

This study aims to identify accident-prone areas and evaluate the road segment performance on Tegar Beriman Road, Bogor Regency, to enhance traffic safety. The methods used include the Accident Equivalent Number (AEK), Upper Control Boundary (BKA) and Upper Control Limit (UCL) to determine blackspot segments, as well as an analysis of saturation degree (DS), free-flow speed, road capacity, and level of service (LOS) based on the Indonesian Road Capacity Guidelines (PKJI) 2023. The study results indicate that five road segments (11, 12, 15, 16, and 18) are categorized as blackspots, with AEK values ranging from 68 to 86, exceeding the BKA (64.58) and UCL (54.30–61.55) values. The primary causes of accidents are drivers’ negligence (36%), loss of vehicle control (25%), and excessive speed (20%), with the most common type of accident being side collisions (42%) and the highest frequency occurring at night (46%). The road segment performance analysis shows that the highest saturation degree (0.67 eastbound, 0.65 westbound) occurs in the evening, with a level of service (LOS) categorized as C, indicating congested but stable traffic conditions. To improve safety, recommendations include speed limitations, enhanced lighting, improved road markings, and stricter supervision, particularly during high-risk accident hours. Periodic evaluations and further studies are necessary to ensure the effectiveness of safety policies and reduce the accident rate on this road segment.