The Activator Rail is a special type of rail that triggers certain Minecart functions when powered by Redstone. It is used to eject players or mobs, disable hopper minecarts, and activate TNT Minecarts. An Activator Rail is crafted using 6 Iron Ingots, 2 Sticks, and 1 Redstone Torch in a 3×3 crafting grid. It does not generate naturally and must be crafted by the player.

To use an Activator Rail, the player must place it on a solid block. When powered by Redstone, it activates any Minecart that passes over it. A TNT Minecart will ignite and explode shortly after being activated. A Hopper Minecart will be disabled, preventing it from picking up or transferring items. If a Player or Mob is riding a Minecart, they will be ejected when passing over a powered Activator Rail. An Activator Rail can be broken with any tool, but pickaxes break it the fastest.