China has once again pushed the boundaries of rail innovation with the launch of the CETROVO 1.0 Carbon Star Express, the world’s first carbon fiber passenger train. It is an entering service on January 10, 2025, on Qingdao’s Metro Line 1.
The CETROVO 1.0, independently developed by Chinese companies, is a testament to cutting-edge advancements in rail technology. Its load-bearing structures, including the train’s body and bogie frames, are primarily constructed from carbon fiber. This material, known for its strength andlightweightt, gives CETROVO 1.0 a significant edge over traditional all-metal trains.
Operating on Metro Line 1—a 37.2-mile north-south route in Qingdao with 41 stations—the train is approximately 11% lighter than similar models. This reduced weight allows it to consume 7% less energy, translating into an annual reduction of 130 tons of CO? emissions. To put that into perspective, this is equivalent to planting 6.7 hectares (100 acres) of trees.
Carbon fibers are ultra-thin crystalline filaments of carbon, known for their exceptional tensile strength and stiffness. Despite being about five times stronger than steel, carbon fiber weighs only 25% of the mass of steel, making it an ideal material for lightweight rail vehicles.
In addition to its weight advantages, carbon fiber offers enhanced durability, excellent impact resistance, and a longer structural lifespan. Passengers also benefit from a smoother and quieter ride, thanks to reduced vibration.
The development of the CETROVO 1.0 began in 2021. After three years of rigorous research and development, the train underwent extensive testing between July and December of 2024. Notably, it reached speeds of 87 mph (140 kph), surpassing the average speed of 49.7 mph (80 kph) for Chinese metro trains.
Over 50 technical evaluations validated its performance, culminating in a passenger trial in late 2024. By January 5, 2025, the train received the green light for full operation.
The CETROVO 1.0 is fully automated, enabling longer operational hours with minimal downtime. It incorporates intelligent safety features, including an anti-collision early warning system and an obstacle detection system that can automatically halt the train during emergencies.
Beyond its technological prowess, CETROVO 1.0 aligns with China’s commitment to sustainability by reducing energy consumption and emissions. Its enhanced efficiency and durability make it a model for future urban transit systems.
