Narrow aisle pallet racking allows for space utilisation within a pallet racking system. Narrow aisle racking can be particularly efficient for areas, such as inner cities, with high rental or land prices. This method of pallet racking maximises height and allows for greater efficiency of storage. It also requires the use of narrow aisle forklift trucks as they can lift higher and work faster than regular forklift trucks. These machines cannot turn in the aisles so wire guidance is fitted in to warehouse flooring.