Let’s unpack the definition of universal design:


Part 1: “Design that is usable by all people…”

The biggest challenge of designing for “all people” is ensuring it’s functional for people with diverse abilities. Do it well, and the results will be usable and marketable to everyone.

Universal design is often misunderstood as only being for people with disabilities, but disability is part of the human condition. It’s not a diagnosis. Our bodies don’t always work as they should.

Universal design aims to make products and environments accessible and usable by everyone, regardless of age, ability, or status in life. The focus should be on creating intuitive, flexible, simple designs, minimizing physical effort, and accommodating all users through perceptible information presentation. UD emphasizes error tolerance and adequate space for approach and use, ensuring safety and comfort for all.

Illustration of a diverse group of a dozen or so people. An elderly gentleman is sitting in a wheelchair, and a young adult woman is leaning on a cane.

Part 2: “To the greatest extent possible…”

Something universally designed will work for as many people as possible, including those with any impairment of the body or mind. There are always constraints (e.g., space, budget), but the goal should be to push design as far as possible to create usability for anyone, regardless of if he or she has…

  1. Difficulty interpreting or processing information.
  2. A susceptibility to fainting, dizziness, or seizures.
  3. A speech impediment.
  4. Difficulty processing sensory input.
  5. Blindness (loss of sight).
  6. Low vision (limited sight).
  7. Deafness (loss of hearing).
  8. A hearing impairment.
  9. A mental health impairment.
  10. A need for caregiver assistance.
  1. Difficulty moving the neck or head.
  2. Limited stamina.
  3. Difficulty sitting.
  4. Limited coordination.
  5. Limited sensation.
  6. Limited balance.
  7. Loss of upper extremity motor control.
  8. Loss of lower extremity motor control.
  9. Difficulty reaching, lifting, or carrying items.
  10. Difficulty bending, kneeling, etc.
  11. A reliance on walking aids or mobility devices.
  12. Difficulty manipulating items.
  13. Chemical sensitivities.
  14. An extreme height or weight.

Impairments are individual factors that limit someone’s function, often due to a health condition. The list above reflects the range of impairments universal design accounts for.

Disability occurs when external factors create barriers to completing tasks or participating in daily life because the design of the environment doesn’t accommodate someone’s needs.

Disability is not a diagnosis. Impairment is part of the human experience. Our bodies will wear out. We’re all susceptible to injury or illness. Lots of stuff can affect “typical” function/ability.


Part 3: “Without the need for adaptation or specialized design.”

Adaptation:

Adaptations are products or strategies a person uses to successfully perform tasks when their environment does not accommodate their needs.

Adaptation is different from modification. Modifications are changes made to something, like retrofitting a home.

Specialized Design:

Specialized design refers to features designed to accommodate a specific need. A design element is specialized rather than universal when it is useful for some people but not all people.

Universal design should be structured to accommodate specialized elements when they are needed. Universal design provides usability for everyone.