| Title | Detectable Warning Surfaces : Color, Contrast, and Reflectance |
|---|---|
| Record ID | 49367 |
| Personal Name Creator |
Bentzen, Billie L.; Nolin, Tina; Easton, Randolph |
| Source | 44p. in various pagings |
| Corporate Creator | John A. Volpe National Transportation Systems Center (U.S.) |
| Corporate Contributor |
United States. Department of Transportation. Federal Transit Administration |
| Publisher | United States. Department of Transportation. Federal Transit Administration |
| Publication Date | 19940901 |
| Language | English |
| 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. |
| Rosap ID | dot:10819 |
| Rosap URL | https://rosap.ntl.bts.gov/view/dot/10819 |
| TRT Terms | Accessibility; Contrast; Detectors; Signals; Visually impaired persons; Warning signals |
| 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 |
| Geographical Coverage |
United States |
| Report Number | DOT-VNTSC-FTA-94-5; FTA-MA-06-0201-94-3 |
| Resource type | Tech Report |
| URL | https://ntlrepository.blob.core.windows.net/lib/49000/49300/49367/DOT-VNTSC-FTA-94-3.pdf |
| Format | |
| Database | NTL Digital Repository |