The end of the tank truck has a chain that is dragged to the ground. Why is that?
There are two kinds of chains in the rear of the tanker. One is the iron chain on the spare tire rack, and the other two is the anti-skid chain. The tail of the tank is also equipped with an electrostatic tape used for removing static electricity. It is a black strip made of insulating plastic and copper wire. Please look carefully.
The tail of the tanker has a chain that is dragged to the ground. Sure is the chain!