SimpleCarts uses configurable "control blocks" placed under a Rail, Detector Rail or Powered Rail to perform one of many different actions. When a Minecart moves into the space above one of these blocks, that action is performed. Available control blocks are:
Booster: Speed up a Minecart by 2x speed (default Gold Block).
Bouncer: Reverse the direction that a Minecart is traveling (default Wool).
Brake: Slow down a Minecart by 1/2 speed (default Soul Sand).
Ejector: Eject a player from a Minecart (default Iron Block).
Elevator: Teleport a Minecart up/down onto another Elevator block (default Diamond Block).
Intersection: Choose the cardinal direction for a Minecart to travel (default Brick).
Station: Stop a player-filled Minecart entirely, and launch once powered (Lapis Lazuli Block).
All blocks excluding Intersections can be disabled by an active redstone current by default. SimpleCarts also includes the following "utility blocks" (the block types of which are not configurable):
Collector: Gather a Minecart upon collision (always Chest).
Dispenser: Spawn a Minecart once powered (always Dispenser).
/sc or /simplecarts - Command reference for SimpleCarts
/scinfo or /simplecartsinfo - General plugin information on SimpleCarts
/sceject or /simplecartseject - Forces player from a Minecart