0401

Wayfinding Signage for Airfield

Specification: A sign posted on the wall across from the entrance that directs visitors to the information center. Requires text and a directional arrow.

Accessibility issues to address: visual impairment  &  memory difficulties

Recommendations:

• Use ‘Grouping’ to optimize utility to the reader, and clarifies understanding.
• Use ‘Consistency’ to help to decrease distractions and draw attention to a novel element.
• Ensure maintaining a pyramidal hierarchical structure within a page.
• Letterform width: The width of an uppercase “O” should be within 75% and 105% of the height of an uppercase “I.”
• Imposters: Avoid typefaces that have letterform designs that are virtually identical for multiple letters.
• Use Screen Readers.
• Keep the line length between 45 to 90 characters, including spaces.
• Apply Audio Video Content.
• Hoverable. The user must be able to continue to move their pointer around over the hover area, without the additional content disappearing.
• Persistent. The additional content revealed on the hover or focus event must remain persistently visible until the user dismisses it.
• Implement ‘Undo’ mechanism to undo or reverse the form submission.
• Scrolling should be confined to a single axis only, but vertically.
• Keep a minimum contrast ratio of 70%
• Use a non-glare finish.
• Comply with international standards for pictogram usage. Keep the field around it at least 150mm in height.
• In any case, ensure a minimum font size of 16mm cap-height.