原文传递
Wet Night Visibility of Pavement Markings.
| 题名： | Wet Night Visibility of Pavement Markings. |
| 作者： | gibbons, r. b. hankey, j. m. pashaj, i. |
| 关键词： | *Highway-safety.;Visibility-; Effectiveness-; Safety-; Legibility-; Test-methods; Participants-; Retroreflectivity-; Performance-evaluation. |
| 摘要： | This project is an investigation into the performance of pavement markings in wet night conditions. A typical pavement marking's performance will degrade when it gets wet. This is a result of the flooding of the marking optics, thereby reducing retroreflectivity. As a result, the visibility distance of the marking is reduced. Several different technologies are available to improve pavement marking performance under wet conditions. In this project, six pavement marking technologies were tested using standard measurement methods, in-situ photometric measurements, and participant evaluations. The standard measurement methods are the current ASTM methods for the measurement of the wet retroreflectivity of pavement markings, which consist of a test method for a standard condition of wetness (as the pavement marking dries following cessation of rain) and a test method for a standard condition of continuous wetting (for a pavement marking during rainfall). Two participant evaluations were performed. The first was a saturated evaluation, where participants were asked to evaluate marking visibility distance while simulated rain was flooding the marking. The second was a recovery evaluation, where participants were asked to evaluate the marking for a period of 10 min after the rain was turned off. |
| 报告类型： | 科技报告 |
相关文献
- Wet Night Visibility of Pavement Markings: Executive Summary.
- Evaluation of Wet-Nightime Delineation.
- Evaluation of Wet-Weather Pavement Markings: First Year Report.
- Evaluation of Wet-Weather and Contrast Pavement Marking Applications: Final Report.
- Wet Night Visibility of Pavement Markings: A Static Experiment.
- Lane Markings in Night Driving: A Review of Past Research and of the Present Situation
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