This mechanic usually requires players to pick up an item or good at one location on the playing board and bring it to another location on the playing board. Initial placement of the item can be either predetermined or random. The delivery of the good usually gives the player money to do more actions with. In most cases, there is a game rule or another mechanic that determines where the item needs to go.
In Railroad Tycoon, players build railroads between cities and use them to deliver good cubes from one city to another. The force that drives the good to the location is the color of the good goes to a matching colored city. when the player delivers the good to that city, the player receives money.