A drive-in rack is an accumulation pallet-racking system in which the truck drives directly into the structure to deposit or retrieve pallets in depth. It maximizes storage density by removing most of the aisles, at the cost of reduced selectivity: a lane generally stores a single reference, accessed on a LIFO basis.
An accumulation principle, two variants
In a classic drive-in rack, only one end of the lane is accessible: the truck enters and exits from the same end. The last pallet placed is therefore the first one retrieved, a LIFO logic (last in, first out). This constraint suits a homogeneous stock well, with few references but large volumes per reference, where exit order matters little — seasonal production, raw materials, non-perishable products.
Drive-through racking (or through-flow drive-in) follows the same accumulation principle, but with open access at both ends of the lane: pallets enter on one side and exit on the other, which enables a FIFO logic (first in, first out) without changing the handling method. This behaves somewhat like a dynamic rack, but without the gravity rollers.
Compared with a conventional pallet rack, drive-in or drive-through racking gains significantly in floor-space utilization, since most of the area is occupied by storage rather than travel aisles. In return, selectivity drops sharply: it's impossible to reach a pallet in the middle of a lane directly without moving the ones ahead of it (or behind it, in drive-through). This is a classic warehouse-design trade-off between density and accessibility, to be settled based on the number of references and the volume per reference.
FAQ
What is the difference between a drive-in rack and a drive-through rack?
Drive-in has only one access point: pallets come out in the reverse order of their entry (LIFO). Drive-through is open at both ends of the lane, which lets pallets come out in their entry order (FIFO), without changing the accumulation method.
When should you choose drive-in racking over conventional racking?
Drive-in racking suits stock with few references but large volumes per reference, where the precise exit order doesn't matter much. Conventional racking remains preferable as soon as you need direct, fast access to every pallet, regardless of reference.
Related terms
Pallet racking · Anatomy of a pallet rack · Cantilever rack · FIFO / LIFO / FEFO · Aisle · Warehouse / logistics platform.
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