On the 6th, the section from Jilin Flyover to Sendai Flyover on the eastern expressway was officially opened to traffic after being adjusted from one-way 3 lanes to one-way 4 lanes from north to south.

The vehicle is running on the eastern expressway. Publicity photography

On the 6th, the section from Jilin Flyover to Sendai Flyover on the eastern expressway was officially opened to traffic after being adjusted from one-way 3 lanes to one-way 4 lanes from north to south.

On the 10th, the reporter drove on the road and found that the original one-way three lane road was cancelled and a clear one-way four lane road was marked on the road. The traffic was smoother than before. "Since the three lane road was changed to four lane road, it has been much smoother than before. It used to take more than half an hour to go to work, but now it can take 20 minutes to get to work." Liu Hanqing, a citizen working near the Sendai Interchange, said.

As for the lane change, the relevant person in charge of the Traffic Department of the Municipal Construction Committee told the reporter: "After fully soliciting the opinions of the relevant member units of the Municipal Traffic Management Committee, such as the Municipal Traffic Transport Bureau and the Traffic Police Detachment of the Municipal Public Security Bureau, the Municipal Traffic Management Office issued the 15th Batch of Comprehensive Traffic Management Tasks of Changchun in 2023 on September 24 We will start the construction of the test section for lane narrowing and section expansion of the expressway, and vigorously promote the implementation of the test section project. " The test section is constructed in the form of fully closed road sections at night from October 1 to 5. The construction period of closed road sections at night is from 22:30 to 5:30 of the next day during the construction period. With the joint efforts of various departments, the eastern expressway section expansion test section was officially opened to traffic in the early morning of October 6.

"The section from Jilin Flyover to Xiantai Flyover on the eastern expressway is adjusted from one-way 3 lanes to one-way 4 lanes from north to south. The total length of the road is 4.8 kilometers. By accessing the recent big data, we found that the traffic of the eastern expressway from north to south was smooth. The congestion index of this section in the morning peak decreased by 50.52%, and the congestion index in the evening peak decreased by 31.92%." The relevant person in charge of the Economic Development Brigade of the Traffic Police Detachment of the Municipal Public Security Bureau said about the change of lanes.

The relevant person in charge of the Traffic Research Center of Changchun Municipal Engineering Design and Research Institute told the reporter that the lane change also optimized the traffic organization in the weaving area of the merging and diverging sections along the line, and simultaneously implemented the speed limit signs, ramp management and control, severe weather road warning and other supporting measures to ensure the order of vehicles on the expressway.

In recent years, the traffic flow of "two horizontal and three vertical" expressways in our city has grown rapidly, exceeding 1.2 million vehicles per day, an increase of 96% over 2018, and the road carrying capacity is close to the limit state. In order to improve the travel quality and smooth capacity of urban traffic and ease the congestion of expressways, in August 2022, the Municipal Traffic Management Office launched the comprehensive traffic management work of the "two horizontal and three vertical" expressway system, put forward four strategies, namely, "main line expansion, network diversion, fast and slow progress, and strengthening management", a total of 13 measures, to accelerate the construction of an "efficient, smooth, and orderly" urban expressway traffic service system.

Liu Zhaoqi, Deputy Chief Engineer of Bridge and Tunnel Discipline of Changchun Municipal Engineering Design and Research Institute, introduced that the municipal municipal engineering design and research institute had covered the operation mode of 3 lanes to 4 lanes at the beginning of the design, which could improve the capacity of facilities and alleviate traffic congestion. In order to effectively improve the road capacity, focusing on the "main line expansion" of the expressway, and on the basis of the experience of Shanghai, Shenzhen and other cities, in December 2022, the municipal traffic management office will start the research work on the pilot scheme of expressway section expansion, hire the relevant expert team to carry out the special research on the "Adjustment and Optimization of Urban Road Lane Width in Changchun City", which will be reviewed by the expert group in May 2023, The expert group agreed that this study can effectively improve the traffic capacity of the pilot section.