<p>he right-turn-on-red (RTOR) rule permits vehicles to make a right turn after coming to a full stop at a red interval, helping to improve traffic flow and reduce congestion. Despite concerns regarding the safety of pedestrians and cyclists, this rule is implemented in many countries, particularly in the United States and Canada. RTOR rule was also recently implemented in Isparta, Turkiye to improve the efficiency of signalized intersections by reducing delays, fuel consumption, and the number of stops. In this study, the effects of RTOR rule at key signalized intersections in Isparta were analyzed, focusing on average vehicle delay and number of stops. The analysis was conducted at three busy intersections: Gülkent Intersection, Yeni Sanayi Intersection, and Peygamber Cami Intersection. The analyses utilized Synchro software, which enables both macro and micro-level simulations. The simulation results showed that right turns on red rule helped reduce congestion, decreased delays at certain approaches, and lowered the number of stops, which is a critical factor for fuel consumption. It is concluded that, thanks to the RTOR rule, delays on certain approach lane groups have decreased by approximately 5%, while the number of stops per vehicle has been reduced by around 25%.</p>