Drive-in racks are a type of pallet racking system that provides high-density storage for homogeneous products with low stock-keeping units (SKUs). They are best suited for products with a large number of pallets per SKU. The racks are designed to allow forklifts to drive directly into the rack structure to deposit or retrieve pallets.

Drive-in racks are suitable for products with high turnover rates, where stock rotation is not a critical concern. Examples include storing products with expiration dates, bulk storage of raw materials, or products with the same manufacturing date.

Since the forklifts enter the rack from one side only, the last pallet loaded is usually the first pallet that can be accessed for retrieval.

Pallets are stored on guide rails or runners that support the pallets from the back to the front of the rack.

Lack of intermediate aisles increases storage density but may reduce selectivity (the ability to access individual pallets directly)