Daejeon City Expands Staggered Signal Operation to Improve Traffic Flow in Chronic Congestion Areas

Provided by Daejeon City

[Asia Economy (Daejeon) Reporter Jeong Il-woong] Daejeon City is improving traffic flow in habitual congestion sections during commuting hours by expanding staggered signal operation.

According to the city on the 6th, staggered signal operation is a signal control technique that adjusts the signal time in the direction where vehicle congestion occurs during commuting hours to reduce vehicle congestion and prevent bottlenecks.

Staggered signal operation is positive in that it can flexibly respond according to traffic conditions and does not require a separate budget.

The city is currently focusing on managing 40 habitual congestion sections with an average travel speed of 15 km/h or less by utilizing the traffic big data system ‘Data Warehouse (DW)’.

For example, the intersections at Tanbang-dong and Yongmun Station, which are under focused management, frequently experience vehicle congestion during commuting hours due to the influence of the traffic-inducing facility, Lotte Department Store.

Accordingly, the city introduced and pilot-operated ‘staggered signal operation’ at two intersections on Gyeryong-ro (Tanbang~Yongmun Station) to improve congestion sections, confirming improvement effects such as a 15% increase in average travel speed (12.7 km/h → 14.6 km/h) and a 15.2% reduction in vehicle delay time (51.2 seconds → 43.4 seconds).

Based on this, the city plans to expand the introduction of staggered signal operation to 10 locations, including Gapcheon Bridge intersection, by the second half of this year to control the traffic volume entering congestion sections and reduce vehicle waiting and queueing.

Han Seon-hee, Director of the City’s Transportation and Construction Bureau, said, “We will gradually expand ‘staggered signal operation’ through continuous on-site monitoring to improve traffic flow during commuting hours,” adding, “The city also plans to establish an advanced traffic signal system using artificial intelligence (AI) traffic control in the future.”

This content was produced with the assistance of AI translation services.