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Evaluation of Ground Mounted Diagrammatic Entrance Ramp Approach Signs; Final rept
| 题名： | Evaluation of Ground Mounted Diagrammatic Entrance Ramp Approach Signs; Final rept |
| 作者： | Zwahlen, H. T.; Schnell, T. |
| 关键词： | Urban transportation; Diagrammatic signs; Driver behavior; Interchanges; Traffic flow; Highway signs; Guidelines; Data analysis; Eye movements; Ramps |
| 摘要： | The effectiveness of ground mounted diagrammatic signs in the context of urban multi-lane arterials leading to a freeway was evaluated. This type of guide sign provides much needed information well in advance of the interchange entrance, thus giving drivers more time to change lanes, if needed. Six highway-freeway interchanges were selected in the Greater Columbus, Ohio, area to determine the effectiveness of ground mounted diagrammatic sign designs were then installed and traffic flow videotaping was repeated. The collected video footage was automatically analyzed with Mobilizer PC. The resulting vehicle count, speed, and headway data was used as input to a closed form analytical model to determine the probability that driver could successfully change lanes as needed, prior to reaching the gore of the freeway entrance. |
| 总页数： | 83p |
| 报告类型： | 科技报告 |
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