The present invention relates to a railway weed control vehicle. It is described to activate (110) at least one weed control unit to control weeds along and around a railway track. The railway track comprises rails and sleepers. The at least one electrode based weed control unit is mounted at at least one first position of the vehicle. Sensor data is acquired (120) by at least one sensor. The sensor data relates to at least one location along and around the railway track. The at least one sensor is mounted at at least one second position of the vehicle. With respect to a forward movement direction of the vehicle the at least one second position is in front of the at least one first position. The sensor data is provided (130) to a processing unit. The sensor data is analysed (140) by the processing unit to determine locations of rail infrastructure components in addition to the rails and sleepers. The processing unit modifies (150) activation of one or more electrode based weed control units of the at least one electrode based weed control unit comprising utilisation of at least one location of the determined locations of the rail infrastructure components.