ADA sign requirements depend on what a sign identifies or communicates. Signs naming permanent rooms and spaces generally need raised characters and Braille, along with applicable visual features. Interior directional and informational signs generally follow visual requirements but do not need Braille solely because they give directions. Mounting location, readable contrast, and pictograms also matter. This guide explains how to identify the right requirements before designing or installing a sign.
Start with the sign’s purpose. A permanent restroom or room number is different from a sign pointing visitors toward that room. The 2010 ADA Standards for Accessible Design, particularly Sections 216 and 703, set out the applicable rules and exceptions. The U.S. Access Board’s signs guide provides illustrated explanations.
What are the main ADA sign requirements?
For a sign identifying a permanent room or space, check the following before approving artwork or installation:
- Raised characters: Tactile characters must meet rules for height, shape, spacing, and depth. They are generally uppercase, sans serif, and raised at least 1/32 inch above the background.
- Braille: Raised characters must be duplicated in contracted Grade 2 Braille. The Braille belongs below the corresponding text and must meet the standards for dot shape, dimensions, and separation.
- Visual readability: Where visual-character requirements apply, characters and their background need a non-glare finish and contrasting light-on-dark or dark-on-light colors. The ADA Standards do not specify one universal percentage contrast ratio for signs.
- Mounting: Tactile signs must meet rules for height, position at doors, and clear floor space so a person can find and read them.
- Pictograms: A pictogram identifying a permanent room or space has additional requirements, including its field and a tactile text descriptor.
These are starting checks, not a complete fabrication specification. The required details depend on the sign’s function and location. Review the applicable provisions before producing a sign schedule or approving a design.
Which signs need raised text and Braille?
Signs identifying permanent rooms and spaces generally require tactile characters and Braille. Common examples include permanent room numbers, restrooms, conference rooms, and other fixed room names. Certain doors in an exit route also require tactile identification.
The word permanent matters. A sign naming a room is not necessarily treated the same way as a changeable occupant name. Building directories, occupant names, company names, and logos are among the items addressed by exceptions in Section 216. Check the actual content and purpose of each sign instead of assuming every sign in a building needs the same features.
Do ADA directional signs need Braille?
Interior signs that direct visitors to spaces or provide information about a facility must meet applicable visual-character requirements. They are not required to have tactile characters and Braille solely because they provide directions. For example, a sign pointing toward a restroom has a different function from the permanent sign identifying the restroom door.
Directional signs should still be easy to read and placed where visitors need to make a decision. Some accessible entrances, restrooms, parking spaces, and other features have specific sign or symbol requirements under the ADA Standards. Review those provisions separately when planning a building-wide wayfinding system.
What are the rules for raised characters and Braille?
Under Section 703, raised characters on applicable tactile signs must be at least 1/32 inch above their background. They must use uppercase, sans-serif lettering that meets the standard’s rules for character height, proportions, stroke, and spacing. For signs where the tactile characters also serve as the visual characters, the usual tactile character-height range is 5/8 inch to 2 inches. Different provisions can apply when compliant visual characters are supplied separately.
Braille must be contracted Grade 2 Braille with rounded or domed dots. It is positioned below the corresponding raised text. If the text has multiple lines, the Braille goes below the entire text. It also needs the required separation from tactile characters, raised borders, and decorative elements.
Simply adding Braille dots to a printed sign is not enough. The raised text, Braille, visual presentation, and installation must work together.
How high should an ADA tactile sign be mounted?
For tactile signs covered by the standard mounting rule, measure from the finished floor or ground to the baseline of the tactile characters:
- The baseline of the lowest tactile character must be at least 48 inches above the finished floor or ground.
- The baseline of the highest tactile character must be no more than 60 inches above the finished floor or ground.
These measurements are not taken to the center or outside edge of the sign panel. At a single door, a tactile sign is generally placed alongside the door on the latch side. Double doors, limited wall space, and permitted door-mounted signs have specific rules. The standards also require an 18-by-18-inch minimum clear floor space centered on the tactile characters and positioned outside the specified portion of the door swing.
Check the Access Board’s mounting illustrations before installation. A correctly fabricated sign can still be difficult to use if it is installed in the wrong place.
What about restroom signs and pictograms?
A sign identifying a permanent restroom needs to be evaluated as a permanent room sign. If a pictogram is used to designate the room, Section 703.6 includes requirements for the pictogram field, finish, contrast, and text descriptor. The descriptor must meet the applicable raised-character and Braille requirements.
Not every symbol has the same treatment. An informational pictogram or accessibility symbol may follow different provisions from a pictogram identifying a permanent room. Check the symbol’s purpose before applying a room-sign specification to it.
How should visual text and contrast be handled?
Visual characters must meet the applicable rules for finish, contrast, form, size, and placement. Characters and their background need a non-glare finish, with light characters on a dark background or dark characters on a light background. The minimum character size can depend on viewing distance and mounting height.
High readability is a better design goal than relying on an unsupported fixed contrast percentage. Avoid decorative lettering, glare, and color combinations that make a sign hard to read. Branding can be incorporated around the required information, provided the finished design still meets the applicable standards.
How do you plan an ADA signage system?
- Create a sign schedule. List permanent rooms, restrooms, exit-route locations, directions, and other signs the property needs.
- Classify each sign by purpose. Separate permanent room identification from directional and informational signs. Note any required accessibility symbols.
- Record installation conditions. Check door types, latch sides, available wall space, clear floor space, and possible obstructions.
- Review artwork against the applicable standard. Check wording, raised text, Braille, pictograms, contrast, and visual character size where required.
- Inspect the installed signs. Confirm that each sign matches the approved schedule and can be reached and read at its intended location.
After installation, inspect signs periodically for damaged Braille or tactile characters, fading, loose mounting, blocked access, and room names that no longer match the building layout.
Frequently asked questions about ADA sign requirements
Do all ADA signs need Braille?
No. Braille and raised characters generally apply to signs identifying permanent rooms and spaces, along with certain other signs specified in the standards. Interior directional and informational signs generally follow visual requirements instead. The sign’s purpose determines which provisions apply.
Are office names and room numbers treated the same way?
Not always. A permanent room number or room designation may need tactile characters and Braille. An occupant’s name is addressed differently under the exceptions in Section 216. Review what the sign identifies, including any permanent information that appears alongside changeable information.
Is there an ADA requirement for a 70% sign contrast ratio?
The 2010 ADA Standards require applicable characters to contrast with their background, using light characters on a dark background or dark characters on a light background, and require a non-glare finish. Section 703.5.1 does not state a universal 70% contrast ratio.
Can compliant signs match a building’s design?
Often, yes. Materials, colors, and finishes can be selected to suit a property, but required tactile, Braille, visual, and mounting features must still meet the applicable standards. Review the final artwork and installation plan rather than assuming a material or style is compliant on its own.
Where can I check the complete requirements?
Use the 2010 ADA Standards for Accessible Design for the governing provisions and the U.S. Access Board’s signs guide for explanations and illustrations. Project-specific requirements and applicable local rules should also be checked before fabrication and installation.
ADA signs for Nashville properties
If your property needs room identification, Braille signs, or a coordinated wayfinding system, see MetroCenter Signworks’ custom ADA signs in Nashville. The team can help plan, produce, and install signs for the building’s approved sign schedule.