Rails are non-solid blocks that provide a path along which minecarts can travel. Rails can be mined with anything, but pickaxes are the quickest. A rail also drops as an item when the block beneath it is removed, or a piston moves it into a space with no block below it, or when water flows across it. Rails are destroyed by flowing lava. Rails can be found naturally running along the floors of mineshafts, and in the "pumpkin ring room" of woodland mansions. A rail can be used as a minecart track
How to use activator rail in Minecraft
Tutorials/Train station – Minecraft Wiki
Powered Rail – Minecraft Wiki
rail activator
Activator Rail – Minecraft Wiki
On A Rail - Minecraft Guide - IGN
Rail – Minecraft Wiki
tag:block:activator_rail_active_flat
Powered Rail – Minecraft Wiki
Rail – Minecraft Wiki
Powered Rail – Minecraft Wiki
Railcraft - Feed The Beast Wiki
Steel Rail Type Overview, rails
Minecart – Minecraft Wiki
Rail – Minecraft Wiki