Another YDM 4 homing at Golden Rock (Tiruchirapalli) moves slowly to the trip shed. Note the 'FP' stone tablet on the ground under the cab. This is the Fouling Point indicator for dead end line. If a 'load' is 'stabled' on the half buried dead end line on the left, it must be further of this mark, else it may collide with a train on the middle loop line.