Activator Rail

Activator Rails are blocks that were added in Update 0.13.0. They are a type of rail that can power certain Minecarts using a Redstone Signal, such as Minecarts. It is also used to eject a mob (including players) from minecarts. When powered, they act as an activator/ejector, while if not powered, they act as a regular rail.

Crafting

 * 6 Iron Ingots + 2 Sticks + 1 Redstone Torch => 16 Activator Rails

Trivia

 * Bug: Activator Rails will not allow a Player in a Minecart to ride on them, they will also make the sound of breaking Carpets when broken. (Update 0.13.1)
 * They are often confused with Detector Rails.
 * Activator rails will ignite Minecarts with TNT.