关键词: 铁路信号系统安全证据, 客观性, 关联性, 合法性

Abstract: The safety evidence of the rail signal system has its particularity. In terms of objectivity， the safety evidence of the rail signal system should not only satisfy the objective content and form， but also overcome its subjective problems from the perspective of scientificity and timeliness. In terms of relevance， the security evidence of the rail signal system should be determined from the perspective of the level of relevance to determine the level of proof capability， set the minimum relevance standard for the adoption of security evidence. At the same time， it should be noted that the relevance includes security evidence that can be proved and the dual function of verification and falsification. In terms of legitimacy， the rail signal system security evidence should meet the legal requirements of the subject， form， and procedure.

Key words: rail signal system safety evidence, objectivity, relevance, legitimacy