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Automated Guided Vehicles: Navigation, Types, and AGV vs AMR
Automated guided vehicles (AGVs) explained: how they navigate, the main types, where they beat AMRs, and how to choose between an AGV and an AMR for your site.
6 min read
· Updated
November 2026
At a glance
The definition
An automated guided vehicle (AGV) is a driverless vehicle that carries loads along predefined paths set by wire, magnetic tape, laser targets, or stored routes, and stops when something blocks the way.
AGV vs AMR
AGVs follow set paths and stop at obstacles. AMRs plan their own routes and steer around them. The difference shows up in setup, route changes, and shared aisles.
Where AGVs win
Fixed, repetitive, often heavy moves in controlled areas, such as pallet transfers, tugger trains, line-side delivery, and handoffs to conveyors or AS/RS.
Automated guided vehicles (AGVs) are driverless, computer-controlled vehicles that carry or tow loads along predefined paths, guided by wire, magnetic tape, laser targets, or routes stored in software. Unlike autonomous mobile robots, which steer around obstacles, an AGV stops when its path is blocked and waits until it is clear.
Moving pallets, carts, and totes between the same points all day is some of the least valuable work in your building, and it ties up drivers you could use elsewhere. Automated guided vehicles took on that job in plants and distribution centers long before autonomous mobile robots arrived. Now both compete for the same moves, vendors use the labels loosely, and you need to know which one fits your floor.
This guide covers how AGVs navigate, the main AGV types, a side-by-side AGV vs AMR comparison, and how companies use AGVs and AMRs. For AMR types, safety standards, and deployment in more depth, see the AMR guide. For every robot type, see warehouse robots.
How automated guided vehicles navigate
MHI describes an AGV system as one or more computer-controlled, wheel-based load carriers that run without an onboard operator or driver, within defined paths or areas. The guidance methods it lists are:
Buried wire. An inductive wire set in the floor carries a signal the vehicle follows. Very precise, but changing a route means cutting the floor again.
Magnetic or optical strips. Tape or strips on the floor surface. Quicker to lay and move than wire, but they sit in the traffic lane.
Laser guidance. A scanner on the vehicle fixes its position against reference targets mounted around the facility.
Inertial guidance. Onboard sensors track the vehicle's movement, corrected by reference points along the route.
Whatever the method, the vehicle follows a route someone defined. As one summary of the R15.08 standard puts it, AGVs follow exact guide paths, whether a physical or virtual line. Fleet control software dispatches each vehicle, holds traffic at intersections, and manages charging.
Types of automated guided vehicles
MHI groups AGVs by how they carry the load:
Fork-based AGVs. Driverless forklifts and pallet trucks in counterbalanced, straddle, narrow-aisle, and reach styles, for pallets on the floor, in racking, or on conveyors.
Unit load AGVs. Carry a load on a deck, lift, or conveyor top. They can't pick loads up from the floor, so stands, conveyors, or AS/RS load and unload them.
Tow and tugger AGVs. Pull 1 or more wheeled loads in a train, often in manufacturing.
Cart AGVs (AGCs). Smaller vehicles, usually for loads under 2,000 pounds, often running simple continuous loops.
Custom AGVs. Built for unusual loads and repeated, defined processes, such as moving work in process or loading trailers.
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AGV vs AMR: the real differences
The cleanest line comes from the standards. ANSI/ITSDF B56.5 covers unmanned automatic guided industrial vehicles, and A3 notes that B56.5 is for AGVs that have predetermined guide paths, while ANSI/A3 R15.08 covers industrial mobile robots that navigate through free space. In practice:
Path. AGVs follow a fixed physical or virtual path. AMRs plan their own route to each destination.
Obstacles. An AGV stops until the obstacle is removed. An AMR slows, then steers around it or takes another route.
Setup and changes. AGV routes are engineered, and wire or tape changes need floor work. AMR routes are edited in software, and the robot maps the space itself.
Traffic. AGVs suit segregated or controlled areas with predictable flows. AMRs cope better with aisles shared with people and lift trucks.
Loads. AGVs are common for heavy pallets, rolls, and tugger trains. Most warehouse AMRs carry totes, carts, shelves, or single pallets, though heavy-payload models exist.
Predictability. AGVs repeat the same path every time, so throughput is easy to model. AMR travel times vary with traffic and rerouting.
Cost profile. AGVs tend to put more cost into route engineering and floor infrastructure; AMRs tend to put more into fleet software and mapping. Compare total cost over the system's life, not the unit price.
Vendor labels are not consistent, so ask each vendor how routes are defined, what the vehicle does at an obstacle, and which safety standard it is certified to.
How companies use AGVs and AMRs
Sites that run both usually split the work by how predictable each move is.
Line-side delivery in manufacturing. Tugger and cart AGVs deliver parts and remove finished goods on fixed loops.
Pallet moves in distribution. Fork AGVs and autonomous forklifts move pallets from receiving to storage, from reserve to forward pick, and to outbound staging.
Handoffs to fixed automation. Unit load AGVs transfer loads to and from conveyors, stands, and AS/RS. See the AS/RS guide.
Picking support. AMRs carry totes beside pickers or bring shelves to stations, where the route changes with every order. See goods-to-person picking.
Sortation and cart transport. Small AMRs sort parcels and move carts between zones as volume shifts through the day.
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How to choose between an AGV and an AMR
How often do routes change? Rarely: an AGV is a strong candidate. Often, or by season: lean toward AMRs.
What are you moving? Heavy pallets, rolls, or carts in trains favor AGVs. Totes, cases, carts, and shelving favor AMRs.
Who shares the space? Segregated lanes favor AGVs. Busy aisles with people favor AMRs.
How much does timing matter? If a downstream line depends on arrivals to the minute, AGV repeatability helps.
What does your building allow? Check floor condition, slopes, door widths, and whether you can cut or tape the floor.
Many sites end up with both. For timelines and vendor questions, see how long robot deployment takes and how to evaluate robotics vendors.
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What to check before you buy AGVs
Load presentation. AGVs expect loads in the same place and condition every time. Broken pallets, overhanging cartons, and loads set down off-position cause faults at pickup and drop stations.
Floors and paths. Confirm floor flatness, slopes, joints, and drains along every route, and whether you can install wire, tape, or targets where they are needed.
Charging plan. Decide how vehicles will charge between tasks or swap batteries, and model whether peak hours leave enough time for it.
Fleet control and interfaces. Ask how the fleet software receives tasks from your WMS, how it coordinates with doors, conveyors, and any AMRs, and who supports it after go-live.
Where Avatar fits
Avatar's robots handle items rather than just moving loads: they pick, pack, kit, sort, and cart inside your existing workflows, working from existing racks and bins with no facility redesign. If your need is moving pallets or carts on fixed routes, an AGV or a transport AMR is likely the better fit; see the Avatar solutions page.
Frequently Asked Questions
What is the difference between an AGV and an AMR?
An AGV follows a predefined path set by wire, tape, laser targets, or a stored route, and stops when blocked. An AMR maps its surroundings, plans its own route, and steers around obstacles. AGVs suit fixed, repetitive moves, while AMRs suit changing routes and shared aisles.
What are automated guided vehicles used for?
AGVs move pallets, carts, rolls, and unit loads on repeated routes. Typical jobs are line-side delivery in manufacturing, pallet moves from receiving to storage, handoffs to conveyors and AS/RS, and tugger trains. They are common where loads are heavy and paths rarely change.
Are AGVs being replaced by AMRs?
Not across the board. AMRs are often chosen where routes change and people share the aisles, but AGVs remain a proven choice for heavy, repetitive moves in controlled areas. Many facilities run both.
What safety standards apply to AGVs?
In the U.S., ANSI/ITSDF B56.5 covers driverless automatic guided industrial vehicles. The ANSI/A3 R15.08 series covers industrial mobile robots, including mobile manipulators built on an AGV platform. Confirm which standard each vendor certifies to.
Sources
1. MHI (n.d.). Automatic Guided Vehicle Systems (AGVS). MHI.
2. Kara, D. (2021). ANSI/RIA R15.08 standard redefines industrial mobile robots: What's new and why it matters. The Robot Report, April 8, 2021.
3. MHI (2019). Picking the Right AGV for Your Operation Depends on Your Handling Needs. MHI Warehouse Automation Blog, July 9, 2019.
4. American National Standards Institute (2024). ANSI/ITSDF B56.5-2024: Safety Standard for Guided Industrial Vehicles. The ANSI Blog.
5. Association for Advancing Automation (2021, February 15). Mobile Robot Standard R15.08-1-2020: What You Need to Know. A3 Industry Insights.
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