A number or combination of numbers and or letters used to designate a
specific storage slot.
Forks: Forks that can be moved closer together or farther apart to
fit a load.
American National Standards Institute. Section B56.1 refers to
regulations for safety and stability for powered industrial trucks.
Crown has units with articulated wheels or drive units. The articulated
or jointed mechanism provides a pivoting action for a leveling effect on
the load and to maximize control and traction.
A device other than conventional forks mounted on the fork carriage of a
truck for handling particular loads. Popular types are carton or roll
clamps, rotating devices, sideshifters, carpet rams, slip sheet
Coupler: A hitch used on tow tractors or carts that connects a
trailer to the tow tractor or to other trailers without manual
assistance and allows carts to be connected together into a train of
Sortation: The electronic recognition of cartons by size or code
enabling these to be sorted into groups.
Battery: A classification of battery used on lift trucks where
minimal usage is required.
The location of stock in bands at different rack levels depending upon
its turnover and in such a way as to minimize order picker travel. The
fastest movers are placed at the most convenient levels for picking
(generally the first and second rack levels), with the slower moving
items placed at floor and higher levels. High-level order picker trucks
are normally used to facilitate selection from higher levels.
A technique used to group orders to maximize order selection efficiency,
by totalizing all orders for the same item and picking them all during
one visit to the pick-front.
Picking lists for two or more orders are combined so that they can be
picked on the same run, thereby minimizing order picker travel. After
selection, items are sorted at an accumulation point into individual
Discharge Indicator: A meter or gauge utilized on lift trucks that
indicates the state-of-charge in the battery. Also referred to as
Discharge Indicator or B.D.I.
Stacker: A manually propelled truck that uses battery power to
operate the lift function. (B Model)
containers usually used for storing small stock keeping units.
printed circuit board that contains electronic components and circuitry
to operate specific functions on a lift truck. Also referred to as PCB,
P.C. Boards, or cards.
The part of a warehouse in which back up or reserve stock is stored
awaiting transfer into active storage.
An area in the warehouse set aside for storage of multiple pallets of a
Racks: Have arms cantilevered off a vertical column and loads are
placed either directly on the arms or on shelves supported by them. They
are used extensively in steel, lumber, and furniture warehousing, having
the advantage of long, unobstructed shelves with no uprights to restrict
storage of long and varied loads.
The rating given a truck indicating the amount of weight that a truck
will lift to a predetermined fork height at a specified load center.
A special pallet used for a specific purpose, usually in conjunction
with a gravity flow rack or stacker crane system. Also referred to as a
printed circuit (PC) board containing various electronic components and
circuitry that perform specific functions.
Non-powered wheels containing a swiveled base that allows them to turn
freely. Used for additional stability in trucks.
Controlled: A truck, such as a PC (Center Controlled Walkie-Rider
Pallet Truck) that has a platform located in the center between the
forks and control handle or between the forks and counterweight. When
riding, the operator stands on the platform and operates the truck.
Battery: A device for restoring the energy of a battery. A charger
may be an integral part of some trucks or separate, housed at a charging
Station: An area in a plant or warehouse containing the necessary
equipment to maintain and recharge truck batteries.
The entire structure of a truck including areas that house the main
electrical components, power and drive units.
attachment which grasps or holds the load, such as a carton clamp or
A mechanical device located at the base of the control arm on such
trucks as the TW, TWR, PC, PE, that when positioned in the coast
position allows the truck to coast to the next picking slot.
Conditioning: A means of preparing a lift truck to operate in colder
than normal environments such as freezers. Some conditioning may include
low temperature hydraulic oil and lubrication, special coating or
plating of components, heaters, etc.
Height: The overall vertical dimension from the floor to the top of
the truck when the forks of the truck are in their fully lowered
The physical hook-up that allows the transfer of an element or substance
between specific points, such as hydraulic hoses, electrical wiring, or
circuits on a P.C. board.
The mechanism that contains the wiring, controls and related hardware
for controlling the various functions of a truck.
Plugging: When direction of travel is changed by the operator, the
drive motor decelerates or slows the truck to a stop then accelerates
the truck in the opposite direction.
A valve that controls the direction of flow of the hydraulic fluid.
means of transporting materials to specific areas by a series of
automated belts or rollers.
To oppose with weight. A truck that utilizes weight in the chassis to
counterbalance the load eliminating the need for outriggers. Some of
Crown's counterbalanced units are WB, RC, and SC.
Abbreviation for Central Processing Unit. The CPU is a microprocessor,
éthe brainsé of a computerized system. It performs the calculations
necessary to provide various information.
The slowest speed a truck, with SCR speed control, will travel when the
directional contactors are just pulled in.
true storage capacity of a building: L x W x H.
Utilization: The ratio of occupied cubic space to total cubic space
available usually expressed as a percentage.
A circuit in the SCR control that maintains a set level to prevent
current peaks from damaging the motors or controls.
Chamber: The area of a cylinder where the hydraulic fluid is metered
to provide a smooth stop when the cylinder reaches the end of its
Double-Acting: A hydraulic cylinder that has power strokes in both
directions. These type of cylinders are used on trucks with steer
cylinders, sideshifters, clamp attachments, etc.
Single-Acting: A hydraulic cylinder that has a power stroke in one
direction only. The return stroke is dependent on gravity along with the
weight being imposed by the device it is operating. Main lifting
cylinders are normally single-acting.
Entry: As merchandise is received or shipped, it is entered into the
computer memory through a terminal to update computerized records.
(Automatic): A brake system utilized on trucks that apply the brake
automatically when the operator leaves the operator compartment or lets
go of the handle.
Aisles: An aisle in a warehouse serving only one function. This
aisle can be for either order selection or storage of product.
Meter: A meter that indicates the state-of-charge in a truck's
flat rotating device for the magnetic storage of information, to be
accessed by a computer.
A device that acts as a bridge between the gap of a dock and the bed of
Have shelves running perpendicular to the storage aisle, each consisting
of a pair of rails on which pallets may be placed two or more deep.
These rails are fastened to upright columns and run the entire depth of
the rack. The rack is laterally supported at the rear by cross bracing.
Fork trucks may be driven into the racks, between the rails to place
pallets in the racks. This type of rack is normally utilized for
repetitive products to take advantage of cubic space available for
storage when the unit loads do not lend themselves to block stacking.
A sealing device around a dock opening that not only seals out inclement
weather or unwanted ambient temperatures, but can also act as a cushion
to absorb force from a backing truck.
Racks: They are usually two rows of selective racks, one placed
behind the other on which pallets may be placed two deep by a double
The pulling or towing force, in pounds, at the hitch or coupler of a tow
tractor such as the TW, TWR, or TR.
Racks: Similar to drive-in racks in that they allow the fork truck
and pallet to enter the rack structure and place the pallet on rails.
However, the drive through rack is not obstructed at the end by bracing,
but gets it's rigidity from it's own overhead bracing or by tying into
the overhead structure. FIFO movement is possible with drive through
racks, whereas LIFO movement must usually be acceptable with drive-in
The tire located on the drive unit that propels the vehicle, usually
made of solid rubber or polyurethane.
Transistorized switch typically used with an SCR system to energize the
coils of contactors.
(Combined Cycle): A single run on which a fork truck or S/R machine
places a load into storage and also retrieves a load from storage.
Wheels: Two load wheels located side-by-side on one shaft or axle.
An electrical braking system that requires manually actuating a switch
to activate the brakes. This system was utilized on the discontinued
Series W Intermediate truck prior to the mechanical brake system.
Rule: The theory that a large proportion of warehouse activity will
be generated by a small proportion of the SKU. Twenty percent of items
give eighty percent of activity. The rule is used in many aspects of
In lead acid industrial truck batteries the electrolyte is a mixture of
sulfuric acid and water.
Disconnect: A means that allows the operator to quickly cut off all
battery power to the truck.
A truck, such as Crown's PE, RC, RR that has a platform located on the
end opposite the forks that an operator can ride on to control the
Height: The measurement from the floor to the top most part of the
truck when the mast and forks or platform are in the fully extended
An elongated style of fork tip utilized primarily on pallet trucks that
have the load wheels positioned closer to the chassis. This permits the
wheels to drop in the first opening of the second pallet when handling
two pallets. It maintains a shorter turning radius when compared to
standard tip, two pallet handling forks.
A storage location that can be reached without moving another storage
Grouping: A method of storing the same, or similar products in a
common area. FIFO/LIFO - First in,
first out/Last in, first out.
Devices that remove unwanted noise or interference in electrical
circuits or contaminants in hydraulic oil.
Forks that are welded to the fork carriage and whose spread cannot be
changed or adjusted.
A platform, in place of forks, that is welded to the carriage.
A storage slot reserved for a specific SKU.
amount of time available before picking slots must be replenished from
reserve slots or re-supply from vendors.
A storage slot that becomes available for any SKU as soon as it is
A storage slot at floor level.
Utilization: The ratio of occupied floor space to total floor space
available, usually expressed as a percentage.
The stacking of unit loads directly on top of each other with the floor
as a base.
(Gravity storage, live storage) non-powered conveyor lanes pitched at a
slight incline so that two or more loads can be stored in one lane with
gravity providing the means of movement within that lane.
Current: The current generated by the rotation of a motor when
battery power is not being applied.
A support structure for forks or attachments, roller mounted, traveling
vertically within the mast.
Extensions: An accessory that when attached to the forks, increases
the fork length and load carrying length.
The front surface of the forks.
The bottom surface located at the bend in the fork.
The total length of the forks measured from the fork face to the fork
Horizontal prongs for picking-up and supporting loads. The forks can be
either fixed or adjustable with formed or forged forks.
The dimension from the outside of one fork to the outside of the other
The section at the end of a fork. Some trucks, such as pallet trucks,
may have extended or standard tips. A forged fork can have a chiseled or
The dimension or width of a fork.
The height the forks reach before the overall collapsed height of the
truck begins to increase.
Full Free Lift:
A truck where the fork carriage travels to the top of the inner mast
before the inner mast begins to rise has full free lift.
The maximum percent of slope the truck can negotiate with a capacity
Clearance: The maximum grade that a truck will clear empty and
loaded without contact between the floor or dock board and the truck.
Truck: A truck that is not powered but manually operated. Crown's
PTH is a hand truck.
A resistor capacitor combination used to filter out electrical noise
that may interfere with the operation of solid state components. Crown
uses a hash filter primarily in horn circuits.
The distance or length from the fork face to the rear of the truck.
A truck that is capable of working continuous shift operation at maximum
electrical term meaning cycles per second, abbreviation is Hz.
The couplers that secure carts or trailers to the back of two tractors.
Hitches available on Crown Tow Tractors are Automatic, Pintle, Pin &
Eye, and Clevis.
A hose reel is a means of storing excess hydraulic hose when not in use.
It is a spring loaded device that automatically retracts or reels in and
feeds out the hose as required. A hose reel is used to supply hydraulic
oil pressure to operate attachments.
An instrument for measuring the specific gravity of the electrolyte in a
battery. A fully charged lead acid battery has a specific gravity of
1.265 to 1.285. A discharged battery will drop to 1.130.
Pound Rating: A rating given a truck to determine what capacity load
a truck can lift at extended load centers.
Battery: A classification of battery used on lift trucks capable of
handling extended usage and recharging several times over it's life.
Inner mast pertains to the 2nd or 3rd stage mast on a telescopic (TL, TF,
TT) lift truck.
Dimension (I.D.): The inside distance between the outriggers. Crown
recommends that this dimension be 2" wider than the width of the
Duty: A truck designed to lift less than capacity loads during a
full work cycle or lift capacity loads during a limited or intermittent
Control: In a complete inventory management system, it includes
stock levels, stock locations, reorder points, balance-on-hand, item
physical description, rotation, etc.
Industrial Truck Association is an organization that includes
representatives from most lift truck manufacturers.
The rope or strap secured on one end to a position on the truck, such as
the overhead guard, and fastened on the other end to a safety belt. This
arrangement, utilized by the operator, provides additional safety on a
stockpicker should the operator accidentally step off the platform.
Lowering a unitized or partial load down to where it can be orderpicked.
A flexible series of connecting links that transmit the lift force from
the hydraulic cylinder to the fork carriage and forks.
The maximum height a truck can lift. Lift height is measured from the
floor to the top of the forks.
Measures the state-of-charge of the battery and when the charge falls
below a predetermined level, the lift interrupt locks out the lift
contacts to prevent lift. Batteries can be damaged by continually
discharging to very low levels.
The speed generally in feet per minute (fpm) when raising the forks
empty and/or loaded.
Lift: The amount the forks raise before the overall lowered height
A switch that limits the lift height or maximum travel speed when the
forks reach a predetermined height.
line is a single transaction. It represents a line on an invoice, or one
stop at a bin front.
A radio frequency signal generator. The line driver generates a radio
signal through the guidepath or wire in the floor for trucks with wire
(A term used synonymously with SKU.) A unique item of inventory-similar
definition to "part number".
A device extending vertically from the fork carriage which helps to
stabilize the pallet load.
One-half the length of a load measured vertically (V.C.G.) or
The wheels located on the load end of a truck, such as in the outriggers
or the forks of a pallet truck. Load wheels can be single, dual or
tandem and typically made of polyurethane, nylon or steel.
A concept where the operator is located in a compartment or platform
that raises and lowers with the forks, such as used on the Turret
Sideloader or Stockpicker.
vertical support member that provides guideways for the vertical
movement of the carriage and forks.
Identifies a Service/Parts Manual that has all the published information
that pertains to a truck(s) since the beginning of the truck(s)
An integrated circuit (IC) that contains the control and processing
elements of a micro-computer.
A plate attached to each truck that contains pertinent information
concerning the truck, such as model and serial number, weight, capacity,
Aisles that are narrower than the 12 feet wide aisle necessary to
properly maneuver and operate a conventional sit-down rider
counterbalanced truck. A narrow aisle is normally considered 7 to 9 feet
A truck with a single mast.
Manual: A manual explaining controls, operation, ratings, planned
maintenance, preliminary safety checks and safe operating procedures
included with each new Crown truck.
An accumulation of orders released for order picking.
The person performing the physical selection of goods to fill orders.
Physical selection of goods to fill orders.
Picking Document) This is another term for a pick list.
Occupational Safety and Health Administration. The governing body that
monitors and enforces standards relating to industrial safety.
A stabilizing structural member extending from the lift structure.
Sometimes called base legs or straddle legs.
Outages) A term used to describe the items ordered by customers which
are not available in the warehouse.
Collapsed Height: The maximum height of the vehicle from the ground
to the extreme top point of the truck with the fork carriage in the
fully lowered position.
Height: Same as Overall Collapsed Height.
A framework fitted to a truck located above the head of the operator,
driver's overhead guard (D.O.G.).
Station: Pick up/Discharge Station, Input/Output Station. The
location where inbound material is placed for pick up and storage by a
sideloader, turret truck, or S/R machine, and outboard material is
placed for delivery to production, shipping, or wherever required.
A truck equipped with forks which go between the top and bottom boards
of a double-faced pallet. The wheels lower into spaces between the
bottom boards to raise the pallet off the floor (GPW, PW, PE, PC and
The building of a unit load on a pallet to facilitate storing and
Overhang: The condition created when the overall width and/or depth
of the material on the pallet is greater than the width and/or depth of
A scissor-like extension used on WR, RR and RD trucks. Sometimes call a
Abbreviation for Printed Circuit Board.
Printed Circuit Board containing various electronic components and
circuitry. Also referred to as card or board.
A pick aisle is any aisle in which an order selector can pick orders.
A location in the warehouse where merchandise is available for order
selection. (Same as: Picking Face)
The amount of time required by the order picker to select the
merchandise, place it into his picking container and mark his picking
The facing from which merchandise is picked to fill orders. (Same as:
This is usually expressed in terms of number of cases or number of lines
picked by one order selector per hour.
Diagram: A layout of a hydraulic or electrical system graphically
depicting components and interconnecting lines or leads.
Piece: Is a
unit that must be physically picked. If a box of 10,000 bolts is to be
picked, that is only one piece, but if the box is to be opened and two
bolts picked from it, then two pieces are to be picked.
Rotation along a horizontal plane. The TS has a pivoting or turret
mechanism that allows the operator to pivot the forks in a 180 degree
(See Push/Pull) A flat piece of metal used in place of forks to retrieve
and support loads being transferred on slip sheets. Crown utilizes the
platen concept on Series SSR trucks.
Operator: The area of a rider truck reserved for the operator.
The sudden reversing of the direction of a truck by reversing the
direction of the drive motor(s).
Monitor Trip. This is a feature built into a SCR control. It checks the
main SCR by monitoring the pulses to the motor when the motor is in the
SCR range. If no pulse is present when in the SCR range, the PMT trips
interrupting power to the motor.
Relief: The act of changing postures to reduce stress.
The section of a truck that houses the contactor panels, SCR controls,
hydraulic components, drive unit, and related parts.
Plugging: The operator can control the rate of deceleration with the
brief and abrupt change in voltage and current produced by turning a SCR
on and off in an SCR System.
device that converts mechanical force and motion into hydraulic fluid
power. Pump Motor - An electric motor used in combination with a pump to
supply oil pressure to lift forks, power an attachment, etc.
An attachment which pushes or pulls a load from the platen or forks. The
Series SSR uses such an attachment to load or unload slip sheets.
Disconnect: A device or method that allows an operator to quickly
disconnect or cut off the battery power on a truck.
A framework on which items are stored. Some types of racks are
conventional, drive-in, cantilever, double-deep, pallet, etc.
A method of guiding a truck in the aisle by attaching side rollers to
the truck that engage rails secured to the floor in the aisles.
A truck equipped with a pantograph type reach mechanism that allows the
forks to extend out past the supporting outriggers to pick-up and
deposit loads (RR).
Is the function of transferring stock from a reserve storage area, or
directly from shipping to a primary picking location which has become
A container used for the storage of fluid in a hydraulic power system.
device that impedes the flow, provides resistance to electrical current
in a circuit.
Control: A type of speed control that utilizes resistors to reduce
the voltage to the motor. The lower the voltage, the lower the speed.
Also referred to as contactor control.
A truck designed to be controlled by an operator that rides on it. A
truck can be either a sit-down or stand-up rider.
Stacking: The ability to turn a truck 90 degrees (right angle) in an
aisle to deposit or retrieve a load.
Capacity: The maximum capacity in pounds that a tow tractor is
designed to transport on a level floor.
attachment that uses a revolving action when handling a load. A drum
rotator picks up a load and rotates it.
A systematic drawing of an electrical/hydraulic circuit with components
designated by electrical/electronic symbols or hydraulic symbols.
Silicon Controlled Rectifier. An electronic switch that can be turned on
and off very quickly (up to 300 times a second) that allows current to
pass through in one direction.
A speed control using solid state components. These controls offer
smoother operation and reduced battery drain in comparison to resistor
controlled units. SKU - Stock Keeping Unit represents one unique
inventory item. Example: one style of shirt, in six colors and five
collar sizes, would be 30 different SKU's.
Storage and shipment of material from a warehouse caused by seasonal
surges in customer demands.
Racks: Commonly referred to as pallet racks, shelves running
parallel to the aisle each consisting of a pair of horizontal beams on
which pallets may be placed one deep. These beams are connected to the
front and rear columns of a vertical truss. Every pallet face is exposed
to the aisle providing 100% selectivity.
Ease of accessibility of merchandise. The number of "facings"or
immediately accessible storage slots. Selectivity is sometimes expressed
as the percentage of the total storage slots which are immediately
Battery: A battery classification between automotive and industrial
grade with industrial being the strongest.
An inventory adjustment because of pilferage, over or under shipment, or
Rollers: Rollers attached to the side of a truck that contact rails
anchored in the floor of aisles for the purpose of guiding a truck down
A truck that is able to work in very narrow aisles (6 feet wide). This
truck reaches to the side to load and unload without changing the
direction of travel.
An attachment which can move the forks horizontally to the left or right
to aid in retrieving or placing a load.
A framework that attaches to a pallet truck to provide an elevated
surface when handling skids.
A thin, flat sheet made of fiberboard or plastic used in lieu of pallets
or skids that requires a special attachment for handling.
location in the warehouse with a specific address.
Tapes, discs, or other data mediums containing programs, routines,
codes, etc. for use with computers.
An electromagnetic device consisting of a coil with movable core.
Energizing the coil causes the core to move and perform some type of
Any device that can control current flow without requiring a movement of
parts, a heating of filaments, or a vacuum gap. Some solid state devices
used in Crown equipment are diodes, rectifiers, etc.
A crane type system with a suspended fork lift mast capable of handling
palletized loads or tote boxes. This system is usually built-in.
Areas where goods are temporarily stored awaiting processing by the next
A type of fork tip utilized on a pallet truck that could contain single,
dual, or tandem load wheels and is long enough to handle the length of
one or more pallets.
The mechanism on such trucks as PE, WR, etc. that includes the control
pod, control handle (column between pod and power unit), and related
parts that the operator uses to steer and operate the truck.
A lift truck with all controls for raise/lower, travel, etc. mounted on
an operator's platform that raises and lowers with the forks. Also
referred to as an Orderpicker, Stock Selector, etc.
The aisle from which one stores material or has access to material
Indicates the load is positioned between a truck's outriggers or that
the outriggers straddle the load.
Stacker: A lift truck that has outriggers (straddles) that go on
either side of a load.
planned method in a controlled environment with enforced disciplines.
Load Wheels: Wheels located on outriggers or the forks of pallet
Mast: The second or inner mast works on the same principle as a
telescope. Used when a high lift height is required with a low collapsed
(a) A terminal is any device into which an operator enters or
receives information from a computer. Commonly, a television screen
equipped with a keyboard. (b) A terminal can also be the
Distribution Center itself. In the freight or trucking industry, for
instance, shipments are brought into a Terminal to be consolidated for
onward shipment or broken down into local delivery consignments.
An extra wide T-shaped steering mechanism utilized on Crown's PC and TR
models which contains the controls for travel, raise, lower, horn, and
brakes. The wide handle allows the operator to walk along the side of
the truck and move the truck forward without getting back on the truck.
Protector: A device that is sensitive to temperature and reacts to
abnormal or excessive temperatures to protect critical components.
Thermal protectors are used on SCR controls.
The amount of merchandise shipped through a system or warehouse in a
given time. This is referred to in cases, lines, or tons of product.
action of changing the angle of the forks or mast on a truck for
retrieving or depositing loads.
Relay: A remote controlled electrical switch that, when energized, a
lapse of time occurs before its contacts close or open.
An open topped rigid box for holding material or stock.
An automated chain with spurs that runs in a trough located in the
floor. Its purpose is for the controlled movement of carts or trailers
used in material handling. When a cart reaches the desired destination,
the spur automatically detaches the cart from the automated line.
A power propelled truck used for pulling several carts or trailers. A
tow tractor has no lifting capabilities. A tow tractor is rated by
rolling load capacity and draw bar pull. Crown has the TW, TR, and TWR
The rear non-powered wheels on a tow tractor. Some people also refer to
the load wheels as trail wheels.
Control: A speed control for smooth operation and reduced battery
drain. Traverse - The horizontal or sideways movement of the auxiliary
mast and forks across the carriage of a Turret Sideloader.
A lift truck that is composed of three masts that telescope to achieve
higher lift heights with lower collapsed heights. TT designates a triple
telescopic mast on a Crown lift truck.
The radius of a circle created by the outmost projection of a lift truck
when the operator has the steering mechanism in the tightest turning
The number of times the total inventory value is achieved in sales
volume in a year. (Turns)
revolving mechanism on a Turret Sideloader that allows the operator to
The revolving mechanism on a Turret Sideloader that allows the operator
to pivot the forks horizontally in a 180 degree arc.
Grip: The handles that control speed and direction on Crown
Laboratories: Also referred to as UL. An independent testing
organization with nationally recognized standards for fire and
electrical safety approval on manufactured equipment.
An assembly of cartons or cases into a convenient multiple for
movement as a composite unit.
Size: The overall width, depth, and height of the unit load
including the pallet or container, if used.
Weight: The overall weight of the unit load including pallet or
A hydraulic device that controls fluid flow direction,
pressure, or flow rate.
Fuse: An internal safety device located in the bottom of some
main lift cylinders that monitors the flow of hydraulic fluid leaving
the cylinder. An abnormal increase in flow, due to a line break, will
activate the fuse, closing the cylinder port and locking the cylinder in
the position it is at until repairs are made.
Slotting: Storage of items in descending order of their
popularity by number of order-lines received for them.
The property of fluids that determine their resistance to flow.
Hydraulic fluids come in different viscosities for different ambient
measurement of the force
which causes electrical current to flow in a conductor.
Rider: A power propelled, power lift truck controlled by an
operator either walking along the side or riding.
Truck: A power propelled, power lift truck which an operator
walks with controlling direction and speed, raise and lower by a control
Guidance: An electronic device (line driver) generates a signal
and applies it to a guidepath (wire in-laid in floor). The signal is
picked up by sensors mounted on the truck and relayed to steering
mechanisms for the purpose of automatic guidance.
Picking: A method used to divide the warehouse into order
selection areas. An operator is responsible for orders selected from
that area. This method of order selection requires merging of all parts
of the order prior to shipment.