To reduce the occurrence of accidents during the train-to-train collision test. it is necessary to carry out research on derailment protection. According to the characteristics of the train-to-train collision test. a method of using a U-steel as a guard rail is proposed. https://www.roneverhart.com/Western-Digital-Ultrastar-DC-HC550-WUH721816ALE6L0-0F38460-16TB-7-2K-RPM-SATA-6Gb-s-512e-ISE-3-5in-Hard-Drive/