Definition
Human Factors Engineering is the engineering discipline concerned with designing systems, products, processes and work environments that account for human capabilities, limitations and behaviour.
It applies knowledge about physical, cognitive and organisational human characteristics to improve safety, usability, effectiveness and overall system performance.
Human Explanation
Human Factors Engineering focuses on designing systems that work well for people.
Rather than expecting people to compensate for poor design, it shapes tasks, interfaces, equipment, information and environments to match human abilities, reduce error-likely conditions and support effective decisions.
The principle is to fit the system to the human wherever reasonably possible, rather than forcing the human to adapt to the system.
Why it Matters
Operational failure can emerge from mismatches between system demands and human capabilities even when the technical components function correctly.
Human Factors Engineering helps reduce error-likely conditions, improve safety and usability, manage workload and create systems in which people can perform effectively and sustainably.
Primary Focus
Its primary focus is the interaction between people, technology, tasks, information, organisation and the working environment, and how that interaction influences safety and system performance.
Disciplinary Boundary
Human Factors Engineering is not limited to physical ergonomics, workplace furniture or interface appearance. It also includes cognition, workload, decision-making, communication, teamwork and organisational conditions.
It does not assume that training, procedures or reminders can compensate indefinitely for poor system design. Ergonomics, usability, occupational safety and user experience are related areas, but each has its own scope and should retain a separate canonical definition.
Typical Objectives
- Reduce error-likely conditions
- Improve usability
- Improve workplace and system safety
- Support effective operator performance
- Manage physical and cognitive workload
- Improve situational awareness
- Support decision-making
- Support sustainable human performance
Typical Methods & Tools
Depending on the system, users, tasks, risks and operational context, Human Factors Engineering may apply methods such as:
- Human Reliability Analysis (HRA)
- Task Analysis
- Cognitive Task Analysis
- Ergonomic Assessment
- User-Centred Design
- Human-Machine Interface (HMI) Design
- Workload Assessment
- Usability Testing
- Human Factors Risk Assessment
- Contextual Observation
- Work Domain Analysis
- Use-Related Risk Analysis
Methods are selected according to the users, tasks and consequences of interaction. Human Factors work should examine the system conditions that shape behaviour, not use analysis to assign blame.
Common Applications
- Aviation
- Healthcare
- Manufacturing
- Automotive
- Rail transport
- Medical devices
- Industrial control systems
- Process industries
- Defence
- Human-machine interfaces
Relationship to Other Engineering Disciplines
Human Factors Engineering contributes evidence about human capabilities and interaction so that technical and operational design decisions support the people who use, maintain and manage the system.
- Systems Engineering
- Integrates human requirements, roles and interfaces into system architecture and lifecycle decisions.
- Industrial Engineering
- Uses human factors evidence when designing work, flow, resources and integrated operational systems.
- Manufacturing Engineering
- Applies human requirements to manufacturing equipment, work methods, instructions and workstation design.
- Production Engineering
- Uses workload, task and situational-awareness considerations when organising production execution.
- Quality Engineering
- Uses human interaction and use-error evidence when designing controls and preventing quality failures.
- Reliability Engineering
- Includes human interaction, recovery and error conditions in the analysis of system dependability.