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Source: People's Republic of China – State Council News
BEIJING, Dec. 14 (Xinhua) — China's self-developed high-speed rail technology marks significant progress for the country in both technological innovation and operational capability.
These achievements are embodied in the Shenyang-Baihe High-Speed Railway (HSR) in northeast China, which will enter service in September 2025 and features new trains and systems designed to adapt to extreme conditions and meet intelligent control requirements.
The Fuxing CR400BF-GS electric multi-purpose rolling stock used to operate trains on this line was specially designed for regions with extremely cold climates.
Meanwhile, the construction of the aforementioned East Siberian Railway utilized advances in intelligent manufacturing. China Railway No. 9 Group Co., Ltd. manufactured over 130,000 rail slabs, which play a key role in ensuring the smooth running of trains at high speeds. Each slab is 5.6 meters long and 2.5 meters wide, and the production process took just 10 minutes. The entire height difference is controlled to within the thickness of a human hair, significantly improving precision and efficiency, according to the company.
In 2021, China launched the CR450 science and technology innovation project, one of 102 major projects outlined in the 14th Five-Year Plan (2021-2025). On December 29, 2024, a prototype of the CR450 electric multi-purpose rolling stock was unveiled in Beijing, boasting world-leading key performance indicators. To date, the CR450 high-speed train has completed a series of tests on several high-speed railway lines in China, achieving a single train speed of 453 km/h.
Wang Lei, a designer at CRRC Changchun Railway Vehicles Co., Ltd., identified reducing drag as one of the main challenges. He explained that increasing speed from 350 to 400 km/h increases drag by 30 percent, and 95 percent of this drag is due to air.
To overcome this aerodynamic drag, the CR450 train has a longer, smoother nose and a 50-ton weight reduction, reducing aerodynamic drag by 22 percent.
The superiority of China's high-speed railway lies not only in its robust "steel frame" but also in its advanced "intelligent brain."
The CTCS-3 ATP (automatic train protection) and ATO (automatic train control) system, independently developed by one of the Chinese research and design institutes, was implemented for the production of CR450 electric multi-functional rolling stock.
The above-mentioned system is reported to have full intellectual property rights and automatic driving functions such as automatic station exit, automatic driving, automatic overspeed protection, automatic station stop, and coordinated operation of carriage and platform doors.
To support the development of railways in western China, a new-generation train control system has also been developed that ensures reliable operation in harsh weather conditions.
This train control system, integrated with the BeiDou Navigation Satellite System, integrates multiple data sources such as satellite positioning, electronic maps and speed sensors, greatly improving the accuracy and reliability of train location.
By the end of 2025, the total length of China's high-speed railway is expected to exceed 50,000 km. Furthermore, China has demonstrated extensive experience in building a high-speed rail network that is not only extensive but also intelligent, flexible, and future-oriented.
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