Direction of measurement of trackside HABD

Specific for the French Italian and Swed­ ish networks. Applicable if trackside HABD is not TSI compliant, direction of measurement of trackside Hot Axle Box Detector. If the direction of measurement is: — the same as the direction defined by the start and end of the SoL: (N) — the opposite to the direction defined by the start and end of the SoL: (O) — both directions: (B)