The Americans with Disabilities Act (ADA) has laid out clear rules for designing signage that enables persons with sensory disability to read and understand them correctly. ADA compliant signs in public spaces must include a pictogram, tactile text, Braille, or a combination of these to ensure that people with disability can navigate the area easily and safely. ADA’s Standards for Accessible Design 2010 lists all the signage rules and requirements, which are specified according to the sign’s purpose.
It is important to understand and comply with the relevant ADA regulations prior to designing an ADA sign. Here are some of the key rules:
Apart from complying with the ADA regulations, sign designers can follow certain best practices to create more effective signage. For example, the ADA rulebook does not specify what may be defined as a "high contrast ratio." But a best practice would be to maintain at least 75 LRV (light reflectance value) or higher between the background and content.
In low-lit areas, a best practice would be to create a sign with a dark background and bright content to improve visibility. Overhead signage should ideally be repeated at eye level. Uniformity in textures, colors and text will further assist people. Care should be taken to see that lighting shadows do not interfere with visibility when a sign is hung.
One of the common violations of the ADA sign regulations is incorrect spacing between text, pictograms, or Braille. Character spacing is essential as defined in the regulations. The specifications are fairly simple, but the error happens when the space between some character pairs is naturally less. To ensure compliance, this spacing must be increased more than normal.
Designers and typographers must remember that their goal is to create ADA compliant signs that are easily distinguished and understood. A majority of ADA sign violations occur either from a lack of awareness of the regulations or in an attempt to bypass the rules to enhance the building’s aesthetics.
Respect for the rules, and more importantly, understanding the needs of the people with a disability can help ensure proper compliance and the production of excellent ADA signage.