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Durability of Truncated Dome Warnings on Existing Curb Ramps.
| 题名： | Durability of Truncated Dome Warnings on Existing Curb Ramps. |
| 作者： | kirk, a. r. |
| 关键词： | blind persons,warning systems,curbs |
| 摘要： | In 2002 the Federal Highway Administration (FHWA) notified the Oregon Department of Transportation (ODOT) that that the state was required to use truncated dome detectable warnings on curb ramps. Products appropriate for use on cured concrete surfaces were of particular interest to ODOT. A research project was undertaken to monitor four products that appeared to be best suited for retrofitting existing curb ramps. Over a two-year monitoring period adhesion to the concrete was good, and physical damage was not a problem. Changing color and contrast over the two-year period was an issue, however. Three out of the four products in the study exhibited noticeable color fading, and contrast with the adjacent surfaces decreased in two cases, due to the accumulation of dirt on the truncated dome products. |
| 报告类型： | 科技报告 |
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- EVALUATION OF DETECTABLE WARNING SURFACES FOR SIDEWALK CURB RAMPS.
- Detectable Warnings: Synthesis of U.S. and International Practice
- Durability of Truncated Dome Systems (a.k.a. Detectable Warning Surfaces).
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