Witnessed couple of two wheelers skidding down at chrompet highway

I literally saw like four people skid their vehicle because of this sand and bleeding blood 🥲..Who tf put bulk of sand spreaded across a highway for around 500m dude??? I can't even put a break peacefully thinking my vehicle would skid.. and to increase the heat, the bus and lorry make up the air pollution by running over the sand 🤧😷