Blind carting
From PFS Wiki
In SL Ponyplay, carting is one of the most widespread activity. It's a time when the staff can relax from their hard working day and at the same time ponies are busy while pulling the cart to the given direction. A cart can be pulled by up to 5 ponies with up to 4 passengers and sometime a VIP guest locked in a cage. However all of this can only work smoothly if everyone on the cart uses same communication standard between the driver and the ponies, otherwise all of this can easily ends into a mess! That's why we use specific whip commands to orders the ponies to go in this or that direction with a given speed.