To enhance road safety and reduce the occurrence of traffic accidents, a Traffic Accident Reduction Plan has been formulated. Through integrated approaches encompassing engineering, education, and enforcement, improvement strategies are continuously developed and implemented in response to the characteristics of traffic accidents within the city.
In addition, to reduce traffic weaving conflicts and improve turning movements through channelization, signal operations have been reviewed and adjusted, including measures such as leading or lagging signal phases and split-phase operations. Left-turn lanes (including auxiliary left-turn lanes) have also been installed at intersections, accompanied by corresponding signal timing adjustments, to reduce conflicts between opposing through traffic and left-turning vehicles, as well as to prevent left-turn queues from impeding through traffic and causing congestion. Empirical studies conducted both domestically and internationally have demonstrated that left-turn lanes can effectively mitigate angle collisions at signalized intersections, reducing accident rates by up to 55 percent. From January to July 2025, six such locations were completed. Furthermore, at intersections with higher pedestrian crossing volumes—such as those surrounding major transit stations and commercial districts in the city center—pedestrian-exclusive signal phases and leading pedestrian intervals have been implemented to enhance pedestrian safety. In the first half of 2025, 32 intersections were newly equipped with protected left-turn signal phases.
For existing roadway configurations with medians, where an inner lane is required to be converted into a left-turn lane, enhanced guidance through traffic signs and pavement markings—such as extended taper sections and auxiliary signage—will be provided to reduce the likelihood of through vehicles inadvertently entering left-turn lanes. Where no median constraints exist, roadway markings will be reconfigured using offset lane alignment to accommodate left-turn movements.
