Task analysis – most commonly hierarchical task analysis (HTA) – examines what operators must do, what information they need, and what cognitive and physical demands their tasks place on them. Findings feed directly into interface design, workload assessment, procedure development, and training requirements.

Usability evaluation confirms that interfaces and systems meet defined human factors requirements before deployment – covering display clarity, interaction logic, and situational awareness support. Together, these methods form the analytical backbone of human-centred system design in railways.