Horizontal carousels are a type of automated storage and retrieval system (AS/RS) used in warehouses, manufacturing locations, and distribution centers that greatly increases picking speed and productivity. Carousels deliver parts and goods directly to the operator or picker, instead of making the picker walk to the location of the goods. Goods and products are stored in bins and shelves in the system which revolve around on a circular track, essentially bringing goods and products right to the operator. When combined with software and pick-to-light displays, horizontal carousel systems allow an operator to pick several orders at one time. While the operator is picking from one carousel, the adjacent carousels automatically position themselves in preparation for the next pick. Using carousel technology, these types of systems allow for a single picker to pick many items at the same time in a fraction of time compared to picking from traditional shelving.