Detectable Warning Surfaces : Color, Contrast, and Reflectance

Bentzen, Billie L.; Nolin, Tina; Easton, Randolph; John A. Volpe National Transportation Systems Center, (U.S.)

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Detectable Warning Surfaces : Color, Contrast, and Reflectance

1994-09-01
By Bentzen, Billie L. ; Nolin, Tina ; Easton, Randolph

[PDF-1.46 MB]

English

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Details:

Creators:

Bentzen, Billie L. ; Nolin, Tina ; Easton, Randolph

Bentzen, Billie L. ; Nolin, Tina ; Easton, Randolph Less -
Corporate Creators:

John A. Volpe National Transportation Systems Center, (U.S.)
Corporate Contributors:

United States. Federal Transit Administration
Subject/TRT Terms:

[+]

Accessibility Contrast Detectors Signals Visually Impaired Persons Warning Signals
Publication/ Report Number:

DOT-VNTSC-FTA-94-5 ; FTA-MA-06-0201-94-3

DOT-VNTSC-FTA-94-5 ; FTA-MA-06-0201-94-3 Less -
Resource Type:

Tech Report
Geographical Coverage:

United States
Corporate Publisher:

United States. Federal Transit Administration
NTL Classification:

NTL-PUBLIC TRANSPORTATION-PUBLIC TRANSPORTATION;NTL-PUBLIC TRANSPORTATION-Transit Safety and Security;NTL-SAFETY AND SECURITY-Rail Safety;NTL-SAFETY AND SECURITY-Transit Safety and Security;
Abstract:

The visual contrast of ten detectable warning surface/platform pairs was measured on an interior platform illuminated at 20 foot-candles, as recommended by the Americans with Disabilities Act Accessibility Guidelines (ADAAG) A4.429.2, by 24 persons having very low vision. Tests included objective and subjective measures of visual detectability. Objective measures were accuracy (correct identification in the presence of a warning surface) and response time. Subjective measures were each participant's choice of three most visually detectable contrasts, the one most visually detectable contrast, and the least visually detectable contrast.
Format:

PDF
Collection(s):

Volpe Center
Main Document Checksum:

[+]

urn:sha256:89e727f1c71fc9c3cc2179295afdfd0a35e53138b7460a9af5f5787c04a08cd2
Download URL:

https://rosap.ntl.bts.gov/view/dot/10819/dot_10819_DS1.pdf
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Detectable Warning Surfaces : Color, Contrast, and Reflectance

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