First rounds on the Rennes-St Malo line for this rail scrubber, which propels a jet of water at high pressure on the rails which allows the removal of dead leaves that stick to the rail because of the sap at this time of the year, following trains can skate acceleration or even worse, blocking wheels at breacking and causes what is called "flat wheels", the train will néccésite so a passage to the turn in pit to reprofile the wheels.
