A type of error resulting in a SPADSignal Passed At Danger (without authority). More involving miscommunicationObsolete term for a SPAD error category, Group 1. More between
railway staff.
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A type of error resulting in a SPADSignal Passed At Danger (without authority). More involving miscommunicationObsolete term for a SPAD error category, Group 1. More between
railway staff.