An obstacle is an activity which is carried out during railroad operations during a shunting operation. The activity of the shovel is one of the tasks of a shunting machine ( shunting equipment).
The skid steer puts the block for the braking or stopping of a single rail vehicle on one of the two rails in order to prevent it from being placed in front of a railway vehicle or other obstacle, For example a track termination. This method is used in the rejection of railway wagons with a shunting locomotive or draining over a runway, usually in marshalling yards.
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