Narrow Aisle and very Narrow Aisle Trucks: Some forklifts have NA features or VNA features. To be able to operate safely and efficiently, nearly all counterbalanced trucks need a minimum of 11 feet of aisle width. NA trucks on the other hand, can operate in narrow aisles which are 8 to 10 feet wide. Also, very narrow aisle or VNA trucks could operate in aisles which are 6 feet wide.
The advantage of using a VNA and NA truck over a regular lift is that it makes it possible for warehouses to be built with narrower aisles. The wider aisles in the warehouses allow for more storage of products within a particular space, which improves cube utilization. The loads moved by Very Narrow Aisle and Narrow Aisle trucks typically are limited to around 3000 and 5000 lbs. Reach trucks are capable of operating in narrow aisle. Turret trucks, rotating mast trucks and order selectors could work within narrow or very narrow aisles, depending on the specific unit.
Reach Trucks: Specially designed for retrieval and storage, reach trucks are made with telescoping forks and outriggers that enables the operator to lift and retract a load over the outriggers. These models are not the best suited for loading and unloading trucks, nor for moving loads quickly over long distances. Similar to the order selector, reach trucks could be available for lifting heights which are greater than 30 feet.
Rotating-Mast Trucks and Turret Trucks: Similar to standard sit-down forklifts, rotating mast trucks have masts which are able to rotate in one direction, to a 90 degree angle. This feature enables them to operate in a narrow aisle situation. Turret trucks can operate in narrow or very narrow aisle locations. Like order selectors, these machinery are capable of elevating both the operator and the cargo. Furthermore, they could enable the operator to deal with loads on either side of an aisle without exiting and re-entering the aisle.
Turret trucks are normally wire or rail guided when used within very narrow aisles. This way, the operator doesn't have to focus any energy on their driving skills and can concentrate on the work load at hand. As turret trucks are considered "operator-up" trucks, they can be used for picking cases and items in addition to full pallet handling.