“全球最快高铁”，CR450动车组，创纪录！

Core Viewpoint - The CR450 high-speed train, known as the "world's fastest high-speed train," is undergoing various tests to achieve operational readiness, having already set new speed records and demonstrating significant improvements in design and efficiency [1][3][6]. Group 1: Speed and Performance - The CR450 train has achieved a single-unit speed of 453 km/h and a relative crossing speed of 896 km/h during tests [1][3]. - The train is currently undergoing operational assessments on the Shanghai-Chongqing-Chengdu high-speed railway, requiring a total of 600,000 kilometers of testing to qualify for passenger service [3][6]. Group 2: Design Innovations - The CR450 features a 15-meter long streamlined nose, which is 2.5 meters longer than the CR400 train, resulting in reduced aerodynamic drag [4]. - The train's body has been lowered by 20 cm and its weight reduced by 50 tons, leading to a 22% decrease in overall resistance [5][6]. - The acceleration from 0 to 350 km/h takes only 4 minutes and 40 seconds, compared to 6 minutes and 20 seconds for the current CR400 model, marking a time reduction of 100 seconds [5]. Group 3: Technological Advancements - The CR450 has achieved a 20% reduction in energy consumption and a 4% increase in traction efficiency compared to its predecessor [6]. - The train represents a significant advancement in China's high-speed rail technology, showcasing a comprehensive top-level indicator system for trains operating at 400 km/h [7][8]. Group 4: Future Developments - Comprehensive testing closer to operational conditions is planned for the CR450 on the Chengdu-Chongqing line in 2024 [6]. - The CR450 is part of a broader initiative to develop a series of high-speed trains with independent intellectual property rights, adaptable to various operational environments [8].