As the high-speed railways in the world develop faster and faster, noise has become one of the key issues in highspeed railway operations. By summarizing the innovative work and achievements in noise control of high-speed railway in China, investigating the conducting research on the low noise optimization designs adopted by the new generation high-speed trains abroad, and combining with the distribution characteristics of noise sources at the higher speed of Chinese CR400 EMUs, key optimization directions for noise control of CR450 EMUs were proposed from the aspects of light weight, bogie wrapping, surface smooth, and low dynamic resistance pantograph. Meanwhile, the promotion and application of infrastructure vibration and noise reduction products is suggested to be carried out simultaneously. Comprehensive and systematic breakthroughs should be made from the perspective of "vehicle-line-propagation paths" so as to clarify the requirements and development trend of noise prevention and control on China's high-speed railway for a higher level of speed.

high-speed railway  /  noise control  /  light weight  /  low dynamic resistance