Despite the proposed regulation of speed in elephant zones, trains have knocked down dozens of animals in Assam which has an estimated 5,000 Asiatic animals. The incident follows on the heels of another accident near Madukarai in Coimbatore last week. Three elephants including a pregnant female, an adult ‘makna’, and a calf were among those killed while crossing a track. The loco pilots had cited a curve ahead of the accident spot which contributed to poor visibility on the stretch. Animal activists said the presence of electrical fences on the farmland near the tracks could have restrained their movement too.