Drive-In Racking
Last updated: August 23, 2026
How Drive-In Racking Works
System Configuration
Drive-in racks use vertical uprights with horizontal rails spanning the depth of each storage lane. Pallets rest on rails rather than beams, allowing forklifts to drive beneath stored pallets to access deeper positions.
- Lane structure: Continuous rails support pallets at regular depth intervals
- Entry point: Single opening at front of lane (drive-in) or openings at both ends (drive-through)
- Rail spacing: Matched to pallet dimensions and forklift requirements
- Guide rails: Floor-mounted guides prevent forklift contact with uprights
Access Patterns
Drive-In (LIFO): Last pallet loaded is first pallet retrieved. Single entry point at front of lane. Best for non-perishable bulk storage.
Drive-Through (FIFO): First pallet loaded is first pallet retrieved. Entry points at both ends of lane. Required for perishable inventory or strict rotation requirements.
Lane Depth and Density
Typical Configurations
- Shallow lanes: Moderate density increase with minimal forklift cycle time impact
- Medium lanes: Significant density gains, suitable for slower-moving SKUs
- Deep lanes: Maximum density but longer forklift travel and reduced throughput
Density Advantages
Drive-in systems eliminate aisles between lanes, increasing storage capacity per square foot compared to selective racking. Actual density improvement depends on lane depth, building dimensions, and product mix.
Best Applications
Ideal for Drive-In Racking
- Low SKU count: Few product types with high pallet quantities per SKU
- Bulk storage: Large quantities of identical products
- Non-perishable goods: Products without expiration concerns (LIFO acceptable)
- Seasonal products: High-volume items stored for limited periods
- Cold storage: Maximize expensive refrigerated/frozen space
Poor Fit for Drive-In Racking
- High SKU count: Diverse product mix requiring individual access
- FIFO requirements: Perishables or date-sensitive inventory (use drive-through instead)
- Fast-moving inventory: High-velocity items requiring quick access
- Mixed pallet sizes: Variable product dimensions per SKU
Forklift Requirements
Equipment Considerations
- Lift height: Must reach upper rail levels within lane
- Reach capability: Extended reach for deep lane positions
- Mast clearance: Adequate clearance between mast and uprights
- Operator skill: Precise maneuvering required to prevent impact damage
- Guide rail dependency: Floor guides help operators maintain center alignment
Structural Considerations
Impact Resistance
Drive-in systems experience higher impact loads than selective racking due to forklift operation within the structure. Robust upright columns and rail construction required.
- Heavier gauge steel: Uprights and rails built for repeated impacts
- Structural reinforcement: Additional bracing and tie-ins for stability
- Impact protection: Guide rails, corner guards, and operator training reduce damage
Safety Requirements
- Regular inspection: Check uprights, rails, and connections for damage
- Load capacity placards: Visible weight limits per lane
- Operator training: Specific training for drive-in operation techniques
- Damage protocols: Immediate reporting and repair of impact damage
Drive-In vs Selective Racking
| Factor | Drive-In Racking | Selective Racking |
|---|---|---|
| Storage Density | High (eliminates aisles) | Moderate (requires aisles) |
| Selectivity | Low (LIFO/FIFO only) | Every pallet |
| SKU Capacity | Low (bulk storage) | High (diverse products) |
| Forklift Speed | Slower (drive into lanes) | Faster (direct access) |
| Impact Risk | Higher (forklifts inside structure) | Lower (forklifts in aisles) |
| Best For | Few SKUs, high quantities | Many SKUs, varied quantities |
Frequently Asked Questions
What is drive-in racking?
Drive-in racking stores pallets multiple-deep on continuous rails, allowing forklifts to drive into the rack structure. This high-density system eliminates aisles between lanes, achieving higher storage density than selective racking. Drive-in provides LIFO (last-in, first-out) access. Drive-through with access from both ends provides FIFO (first-in, first-out) access.
What is the difference between drive-in and drive-through racking?
Drive-in racking has one entry point with LIFO access (last pallet in is first pallet out). Drive-through racking has entry points on both ends, enabling FIFO access (first pallet in is first pallet out). Drive-through requires more aisle space but better supports time-sensitive inventory.
How many pallets deep can drive-in racking go?
Drive-in racks store pallets multiple-deep per lane. Deeper lanes increase storage density but reduce selectivity and slow forklift cycle times. Lane depth depends on SKU velocity, forklift reach capability, and building depth.