"Nanjing’s biggest tourist spot is the traffic lights that are definitely customized by a land of giants!" Recently, singer Kenji Wu's humorous teasing in a short video has appealed to a crowd of netizens to focus on Nanjing's traffic lights. These traffic lights that have been dubbed as "traffic lights customized by a land of giants" not only carry the city’s traffic pulse, but also conceal the smart transportation technology code created by Duolun Technology.

01 The Magic of Unique Smart Intersections

Xiaolongwan Area of Jiangning District is a new landmark in Jiangning, a sub-city center of Nanjing. Drivers can obviously feel the difference as follows: the saturation flow rate of the eastern entrance’s left-turn lane at the intersection of Xiaolongwan Road-Yangjiawei Road during the morning peak has been reduced by 50%, and the overall saturation flow rate at the intersection has been lowered by 10%. These changes are attributed to the collaborative cloud-edge-end smart intersection solution created by Duolun Technology, making traffic lights on Nanjing’s streets “smart”.

Adaptive Control Signal Light in Jiangning District, Nanjing

Digital Twin System Applied at Smart Intersections

Duolun Technology makes delicate details to end the deadlock. A three-body collaborative technology framework is leveraged to turn every intersection into an intelligent unit with independent decision-making capabilities. During the practice in Jiangning District, this system shows three principal innovation advantages:

Compatibility with used equipment--support the utilization of a variety of old sensing devices, that is, the system can form a closed loop of perception, control and services.  

Edge intelligent computing--an edge computing device that supports 50+ algorithms to achieve target tracking and signal optimization at intersections.

Free scene portfolios--flexibly configure the four functional modules of intelligent sensing, information control upgrading, holographic intersection and vehicle-road collaboration according to the requirements of different intersections.

These innovative techniques guarantee the adaption to local conditions in Nanjing’s every intersection, truly achieving corresponding intelligent adaptation for each unique intersection.

02 Traffic Lights Turn into “Technological Green Lights”, Safeguarding Lives

When the ambulance’s bright flashing lights cut through darkness, Duolun Technology empowers them with technologies at the speed. In May 2024, the Police-Medical One-Click Escort Platform jointly established by the Traffic Police Brigade of the Jiangning Branch of Nanjing Public Security Bureau and Duolun Technology was officially launched, opening up a green channel for life.

Police-Medical One-Click Escort Platform

Mr. Ma, an ambulance driver at Nanjing Jiangning Hospital, has experienced the changes. He said, "To go to Fengze Road for rescue, it only takes 9 minutes to pass through 17 signal lights, saving at least half the time!" This system’s exquisiteness lies in its design of a senseless escort.

Multi-source data sensing and intelligent computing collaboration--the system can empty vehicles waiting in line in advance, and the signal light automatically turns green when the ambulance is 700 meters away from the intersection.

Smooth control algorithm for safe green lights--the innovative technology eliminates the risk of vehicles running red lights in non-escort directions.

Since its operation, the system has completed over 1,000 missions, with an average of 10 emergency escorts per day, seizing a half life-saving time for patients. Technologies have transformed into a lifeline at this moment.

03 3D Protection from Cloud to Low-Altitude Safety

Duolun Technology's smart genes are not only blended into the urban fabric but also extend into broader spatial dimensions. In the low-altitude domain, the company's "Integrated Air-Ground Traffic Management for Key Urban Airspaces Enabled by Drones" project has been selected as a demonstration application scenario in Nanjing, with the purpose of exploring three-dimensional management and control of arterial roads and congested areas.

Integrated Air-Ground Command and Dispatch System

In terms of the airport surface, the intelligent apron traffic signal lights co-developed by the China Academy of Civil Aviation Science and Technology and Duolun Technology have been applied at airports in Ezhou, Zhuhai and other cities to build a solid runway safety defense line.

The traffic lights on Nanjing's streets continue to pulse, and they aren’t giants’ toys anymore under the guidance of the smart brain empowered by Duolun Technology. Instead, they serve as the neural network that understands the breath of the city and safeguards the rhythm of life. As technology blends into Nanjing’s veins, every glowing signal shines with the warmth of humanity.