Embark/Disembark tracks

Overview
Traincraft adds a bunch of new tracks. You will find them in the transportation tab once Railcraft is installed Usage:
 * There are two embarking tracks and one disembark track
 * They are designed to only load and unload the Stock car
 * Animal boarding track will pick up nearby animals and put them into a passing Stock car
 * Mob boarding track will pick up any mob but not players.
 * The disembark track will drop entities ridding the Stock car
 * All three tracks will emit a redstone signal when embarking/disembarking an entity

Recipes
Crafted inside vanilla workbench, use NEI or something else