Section 504.4 covers the current ADA Standards for the tread surfaces on stairways.
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Tread Surface: ADA Standard Section 504.4
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Contrast
Recommendation: Although ADAAG does not specify values for light-on-dark or dark-on-light contrast, a minimum 70% light reflectance contrast is recommended....
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705.1.3 Contrast
Detectable warning surfaces shall contrast visually with adjacent walking surfaces either light-on-dark, or dark-on-light....
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705.1.3 Contrast
Detectable warning surfaces shall contrast visually with adjacent walking surfaces either light-on-dark, or dark-on-light....
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4.30.3* COLOR CONTRAST
Characters and symbols shall contrast with their background - either light characters on a dark background or dark characters on a light background....
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11B-703.7.2.6.3 Unisex toilet and bathing facilities
The triangle symbol shall contrast with the circle symbol, either light on a dark background or dark on a light background....
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Official Definitions
Okay, the official definition of low vision usually goes hand-in-hand with blindness, and low vision and blindness are often in the same sentence....
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Finish and Contrast [4.30.5]
Consideration should also be given to light sources and the ambient lighting to prevent glare on sign surfaces....
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A4.1.3(19)(a)
For example, a marker which contrasts (light on dark or dark on light) and which also reflects light could be placed on the side of such seating so as to be visible in a lighted auditorium...
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101.3 Intent
to establish the minimum requirements to safeguard the public health, safety and general welfare through structural strength, means of egress facilities, stability, sanitation, adequate light...
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§ 38.119(b)
(b) The doorways of cars not operating at lighted station platforms shall have outside lights which, when the door is open, provide at least 1 foot-candle of illumination on the station...
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§ 38.81(c)
(c) The doorways of vehicles not operating at lighted station platforms shall have outside lights which provide at least 1 foot-candle of illumination on the station platform or street surface...
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11B-411.4.11.2 Contrast
Visual display shall provide contrast with light characters on a dark background or dark characters on a light background. The background shall be solid and static....
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11B-411.4.11.2 Contrast
Visual display shall provide contrast with light characters on a dark background or dark characters on a light background. The background shall be solid and static....
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11B-411.4.11.2 Contrast
Visual display shall provide contrast with light characters on a dark background or dark characters on a light background. The background shall be solid and static....
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11B-411.2.1.2.4.1 Contrast
Display screens shall provide contrast with light characters and symbols on a dark background or dark characters and symbols on a light background....
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11B-411.2.1.2.4.1 Contrast
Display screens shall provide contrast with light characters and symbols on a dark background or dark characters and symbols on a light background....
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11B-411.2.1.2.4.1 Contrast
Display screens shall provide contrast with light characters and symbols on a dark background or dark characters and symbols on a light background....
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R210 Protruding Objects
Protruding objects can be hazardous for pedestrians, especially pedestrians who are blind or have low vision....
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General: ADA Standard Section 205.1
Section 205.1 of the ADA Standards covers information on scoping requirements for operable parts in the most current ADA Standards.
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Conventions Used In This Guide
When text taken from CBC or ADA is included in these boxes, the aforementioned text color/style conventions are used Black Text within single-outlined Box with light...
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ClickAndGo Navigation Wayfinding Technology
Customized Narrative Walking Directions ClickAndGo Navigation is a patented wayfinding technology for blind, low-vision and mobility-challenged pedestrians....
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T502.3.2 Thresholds
The stripe shall be 1 inch (25 mm) wide minimum and contrast with the rest of the walking surface either light-on-dark or dark-on-light....
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705.1.3 Contrast
Detectable warning surfaces shall contrast visually with adjacent walking surfaces either light-on-dark, or dark-on-light. Figure 705.1 Size and Spacing of Truncated Domes...
