The International Rail Quality Board (IRQB) welcomes the launch of the test phase for IRIS Certification Gold quality performance level. The Gold level test phase begins on 1 September right after the end of the test phase for Silver quality performance level. IRQB believes that new quality performance levels function as one of the tools to combat the ongoing crisis as striving for higher quality results in improved efficiency, attractiveness and competitiveness of rail businesses. All IRIS Cer
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