Alert fatigue can be mistaken for just annoyance. In mixed pedestrian–vehicle environments, frequent or poorly aligned alerts can train people to ignore, mute, or work around a control. That can create new risk by eroding trust and normalising “noise”—even when the technology is “working”.
Where alert fatigue shows up (examples by industry)
Warehousing/Distribution Centres:
Alert fatigue tends to appear fastest in high-traffic, mixed-equipment zones – especially where throughput pressure is high. These are some scenarios you can include in your evaluation:
- Dock doors (pedestrians stepping out from trailers / blind corners)
- Aisle intersections + racking ends during peak pick
- Reversing into staging lanes and marshalling areas during peak congestion
Waste & Recycling:
In noisy, cluttered yards, nuisance alerts can quickly erode trust—especially with third-party drivers and variable pedestrian behaviour. Consider these scenarios in your evaluation:
- Tip floor congestion + unpredictable pedestrian behaviour
- Weigh bridge/entry (third-party drivers, visitors, unfamiliar rules)
- Tight yards with blind corners, noise, clutter, and variable lighting
This article is general information only. It is not legal advice or safety consulting. Always align evaluation to your workplace risk management process and traffic management controls.
Why alert fatigue matters (in safety terms)
A control can appear to “work” technically and still fail as a safety control in day-to-day operations. If alerts distract, confuse, or drive workarounds, the control may reduce effectiveness over time. Put simply, you’re balancing three things:
- The hazard: pedestrians interacting with mobile plant
- What the control is meant to do: support separation and situational awareness
- What can go wrong: alert fatigue and unintended behaviour that shifts risk elsewhere
What “good” alert-based control looks like
A well-designed alert-based control typically feels:
- Relevant: alerts align with meaningful exposure (not constant noise)
- Predictable: people can anticipate why it reacts
- Actionable: alerts support a clear response aligned to site rules
- Sustainable: it remains useful across shifts, congestion, and changing conditions
Trial is where the risk actually is
Before trialling anything, map where interaction risk actually occurs on your site, such as:
- Cross-aisle intersections
- Racking ends / aisle exits
- Dock approaches and loading bays
- Reversing zones
- Pedestrian shortcuts that emerge over time
- Shift changeovers and peak congestion
This keeps evaluation grounded in real exposure scenarios, consistent with traffic management guidance that prioritises separation where possible and management of interaction points where separation isn’t practicable.
Three safer evaluation checks
Three checks that usually tell you early whether alerting will hold up in day-to-day use:
#1Behavioural impact
Does the control support safer decisions at real interaction points (not just in quiet “demo” areas)?
#2 Workaround risk
Watch for early warning signs:
- muting/ignoring alerts
- route avoidance that creates new hazards
- frustration or “gaming” the control to get tasks done
#3 Procedure alignment
Do alert behaviours match how work is actually done? If normal tasks create constant alerts, you may be setting people up to ignore the system.
Key questions to reduce alert-fatigue risk early
Before you commit to a trial, it’s worth asking:
- “In our busiest area, how do we avoid constant alarming during normal work?”
- “What are early warning signs of alert fatigue and workarounds?”
- “If we see unintended behaviour, what’s the change process and who owns it?”
- “How do you support ongoing review as our site changes?”
What pedestrian detection can (and can’t) do
Pedestrian detection can be an engineering control / risk mitigation aid that supports your traffic management plan, procedures, training and supervision. It is not a complete safety solution and it does not eliminate residual risk. The key takeaway from this article is to choose a system that fits your safety goals, rather than compromising requirements for extra features. Start by understanding your site’s risk profile and keeping these questions front of mind.
Sources
- Safe Work Australia – Managing risks: https://www.safeworkaustralia.gov.au/safety-topic/managing-health-and-safety/identify-assess-and-control-hazards/managing-risks
- Safe Work Australia – Code of Practice: How to manage WHS risks (PDF): https://www.safeworkaustralia.gov.au/system/files/documents/1901/code_of_practice_-_how_to_manage_work_health_and_safety_risks_1.pdf
- Safe Work Australia – General guide for workplace traffic management (PDF): https://www.safeworkaustralia.gov.au/system/files/documents/1703/traffic-management-general-guide.pdf
- OSHA – Hierarchy of Controls (PDF): https://www.osha.gov/sites/default/files/Hierarchy_of_Controls_02.01.23_form_508_2.pdf
