Specifies the requirements for the provision, visibility, readability, maintenance and testing of a specific set of ERTMS trackside boards associated with the following DMI and ETCS track conditions: - ETCS stop marker; - ETCS location marker, the trackside ETCS signal to identify a specific location on the line; - level transition, corresponding to transitions between ETCS levels; - lower pantograph; - pantograph lowered; - raise pantograph; - neutral section announcement; - neutral section; - end of neutral section; and - GSM-R network border marker.