An official website of the United States government
Official websites use .gov
A .gov website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.
Learn how operators percieve the amount of work they need to perform
What is workload?Humans have limited attentional resources to process information. Given these limits, workload that is too high can result in performance challenges such as errors, lapses, slower response times....
Discover what activities operators perform on the job, and how often.
Activity Analysis (AA) can be used to document anything that a person does while performing a task. There are two purposes for AA: to determine the activities that occur in any situation, and how often the activities...
Understand how work is done, and describe it in terms of flow, time, or elements.
Functional Analysis is an umbrella term for a variety of methods that can be used early in the system development process (Nemeth, 2004). The types of questions that can be answered using function...
Find best arrangement of elements in a design
Link Analysis (LA) can be used to arrange the location of equipment and individuals in a workplace, and to arrange controls and displays on a console based on how often elements interact, or are used together.
As a form of...
Learn how work is actually done in real circumstances.
Observing people in the context of their work environment can be used to gain insight into how individuals and teams perform their work. By watching intently in actual work settings, understanding “emerges from the...
Methods are the processes research and development teams follow to create tools for operators. They typically follow three phases.
Research--Learn about rail operations, how operators do their work, what goals they need to accomplish and what gets in their way. Requirements this phase...
Eye tracking is the process of capturing what a person is looking at, or the direction where he/she is looking, using sensors mounted on a nearby work surface or a head harness (as the illustration at right shows).
How is eye...Human Factors Design Guidelines for Multifunction Displays by Mejdal, McCauley, & Beringer (2001) provides a series of human factors guidelines for the design of multifunction displays including issues of attention and distraction. It provides general principles and...