In a warehouse using AGVs for both inbound and outbound operations, the fleet may receive many transport tasks at the same time.

Without clear priority rules, an AGV fleet can spend too much time handling low-urgency movements while time-sensitive outbound pallets wait.

Mission priority should therefore be designed as part of the warehouse workflow.

What Is an AGV Mission Priority?

A mission priority determines which transport task should be handled first when multiple tasks are waiting for available AGVs.

Possible task categories include:

• Urgent outbound shipment

• Normal outbound shipment

• Inbound receiving

• Putaway

• Retrieval

• Empty-pallet movement

• Exception handling

The actual priority structure should be based on the warehouse's operational requirements. 《How to Select the Right Automated Forklift for Your Warehouse》

Why Can a Simple First-In-First-Out Rule Be Insufficient?

First-in-first-out processing is easy to understand, but warehouse tasks do not always have equal business importance.

For example, an inbound pallet may have been waiting for several minutes while an outbound shipment has an approaching loading cutoff.

If the system always processes tasks strictly according to creation time, the fleet may not respond appropriately to time-sensitive operations.

What Factors Can Affect Mission Priority?

• Outbound cutoff time

• Shipment urgency

• Customer requirements

• Dock availability

• Storage capacity

• Production requirements

• Pallet location

• Current AGV position

• Traffic conditions

• Task waiting time

The system can use one or several of these factors depending on its capabilities.

How Should Inbound and Outbound Tasks Be Balanced?

Giving every outbound task the highest possible priority can create another problem: inbound pallets may accumulate at receiving.

Therefore, priority management should protect both sides of the warehouse flow.

A practical approach may divide tasks into priority levels rather than treating every movement independently.

For example:

• Priority 1: critical time-sensitive transport

• Priority 2: normal outbound transport

• Priority 3: normal inbound and storage transport

• Priority 4: low-urgency internal movements

The exact configuration should be determined from actual warehouse requirements.

Should Waiting Time Increase a Task's Priority?

It can be useful to prevent a task from waiting indefinitely.

For example, a low-priority task that has remained in the queue for a long period could gradually receive higher priority.

This type of mechanism can help prevent task starvation, but the exact implementation depends on the fleet management software.

How Does AGV Location Affect Priority?

Priority should not necessarily mean that the physically closest AGV always receives the task.

The system may also need to consider:

• Current vehicle direction

• Vehicle load status

• Battery condition

• Traffic congestion

• Restricted zones

• Next planned mission

A good fleet-control strategy considers both task importance and fleet availability.

How Should Urgent Outbound Pallets Be Handled?

Urgent shipments should have a clearly defined trigger.

The warehouse should determine how an urgent task enters the fleet-control system and who is authorized to change its priority.

This prevents operators from manually changing priorities without control and creating unpredictable fleet behavior.

How Can Priority Rules Be Tested?

Before go-live, create scenarios where different tasks compete for the same AGV fleet.

For example:

• Several inbound tasks waiting

• Several outbound tasks waiting

• One urgent outbound task introduced later

• AGVs operating in different warehouse zones

• One AGV becoming temporarily unavailable

• Charging demand occurring during peak task volume

Observe whether the actual task sequence matches the intended business rules.

What Metrics Should Be Monitored?

• Task waiting time

• Task completion time

• Priority changes

• Outbound cutoff performance

• Inbound pallet accumulation

• AGV utilization

• Task starvation events

• Manual intervention frequency

These measurements can reveal whether the priority rules are producing the desired warehouse behavior.

What Should Be Confirmed With the AGV Supplier?

• Supported task-priority levels

• Priority configuration method

• WMS task-priority interface

• Manual priority override

• Waiting-time escalation

• Task cancellation

• Emergency task handling

• Fleet behavior when an assigned AGV becomes unavailable

Mission priority should be treated as part of the warehouse process design, not simply as a software setting added after AGV deployment.