China's 35,000-tonne heavy-haul train group completed the world's first automated platooning test for such trains. During the test, seven 5,000-tonne freight trains formed a platoon via wireless signals rather than mechanical couplers. This approach makes freight transport safer, smoother, and more flexible, while reducing wear on tracks and wheels. This method is expected to boost coal transportation volume by more than 50 percent. | CGTN