Even Horn also Important. Once I saw a Memu colliding with a Tractor at a Level crossing. Then Tractor was Thrashed in to Pieces. Memu also Damaged it's Horn Blowers. The very next moment Motorman stopped Memu nearby station Odur. From he din't move an Inch coz of this Horn thing. Then a Goods loco brought here to Odur station from Gudur and connected it. Then only this train moved.
So, all parts are Very Very Important.
Thanks.