The Boarding Track is part of RailCraft. When powered, these rails act just like vanilla Powered Rails. However, when unpowered they will grab and hold onto any cart that passes over them. However, unlike Powered Rails, the cart can't be pushed off. Additionally, when placed the rail will have an arrow on one side. When an unpowered boarding rail with a minecart on it becomes powered, it will launch the cart in that direction.