Front to front or front to end impacts between two trains or a (side) impact between one train and part of another train not clear of the loading gauge, or a train impacting with: (a)Shunting movements; (b) Fixed objects such as buff er stops or; (c)Objects temporarily present at or near the track (except at level crossings), such as rocks, landslides, trees, lost parts of railway vehicles, road vehicles and machines or equipment for track maintenance.