Study on the Deocclusion of the Visibility Window of Traffic Signs on a Curved Highway
Highway navigation is often affected by complex topography, and the flat curve plays an important role in the horizontal alignment design of a highway. Many curves are formed, where visibility could be decreased. Thus, the indicative function of a traffic sign plays a crucial role in ensuring drivin...
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| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2020-01-01
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| Series: | Journal of Advanced Transportation |
| Online Access: | http://dx.doi.org/10.1155/2020/4291018 |
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| _version_ | 1850179115754192896 |
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| author | Jian Xiao Jian Zhao Liulin Yang Juanxia He Yu Li Yuxiao Li |
| author_facet | Jian Xiao Jian Zhao Liulin Yang Juanxia He Yu Li Yuxiao Li |
| author_sort | Jian Xiao |
| collection | DOAJ |
| description | Highway navigation is often affected by complex topography, and the flat curve plays an important role in the horizontal alignment design of a highway. Many curves are formed, where visibility could be decreased. Thus, the indicative function of a traffic sign plays a crucial role in ensuring driving safety at the curve. Due to the blocked visibility, the probability of the traffic sign occlusion at the curve of operating highways is quite high. It is urgent to consider the clearing obstructions around traffic signs at curves during highway construction. In this study, the potential of visual occlusion for traffic signs on curved highways was investigated. Firstly, the driver’s visibility window that contains traffic signs was defined and criteria of visual occlusion were proposed. Secondly, a geometric occlusion design formula was established to mimic the visual recognition process of traffic signs on a curved highway, yielding the formula to calculate the visibility window. Finally, the occlusion design formula was applied into a case study of the Beijing-Hong Kong-Macau Expressway (Hunan section), in which visibility windows were calculated and analyzed. The obtained results verified the correctness and effectiveness of the occlusion design formula developed in this study. |
| format | Article |
| id | doaj-art-be7608d0cfa549dba48b39e724a13a29 |
| institution | OA Journals |
| issn | 0197-6729 2042-3195 |
| language | English |
| publishDate | 2020-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Journal of Advanced Transportation |
| spelling | doaj-art-be7608d0cfa549dba48b39e724a13a292025-08-20T02:18:35ZengWileyJournal of Advanced Transportation0197-67292042-31952020-01-01202010.1155/2020/42910184291018Study on the Deocclusion of the Visibility Window of Traffic Signs on a Curved HighwayJian Xiao0Jian Zhao1Liulin Yang2Juanxia He3Yu Li4Yuxiao Li5School of Traffic & Transportation Engineering, Changsha University of Science & Technology, Chiling Road, Tianxin Qu, Changsha 410205, Hunan, ChinaSchool of Traffic & Transportation Engineering, Changsha University of Science & Technology, Chiling Road, Tianxin Qu, Changsha 410205, Hunan, ChinaCollege of Electrical Engineering, Guangxi University, Daxue E Rd, Xixiangtang Qu, Nanning 530000, Guangxi, ChinaSchool of Resource, Environment, and Materials, Guangxi University, Daxue E Rd, Xixiangtang Qu, Nanning 530000, Guangxi, ChinaCollege of Electrical Engineering, Guangxi University, Daxue E Rd, Xixiangtang Qu, Nanning 530000, Guangxi, ChinaSchool of Resource, Environment, and Materials, Guangxi University, Daxue E Rd, Xixiangtang Qu, Nanning 530000, Guangxi, ChinaHighway navigation is often affected by complex topography, and the flat curve plays an important role in the horizontal alignment design of a highway. Many curves are formed, where visibility could be decreased. Thus, the indicative function of a traffic sign plays a crucial role in ensuring driving safety at the curve. Due to the blocked visibility, the probability of the traffic sign occlusion at the curve of operating highways is quite high. It is urgent to consider the clearing obstructions around traffic signs at curves during highway construction. In this study, the potential of visual occlusion for traffic signs on curved highways was investigated. Firstly, the driver’s visibility window that contains traffic signs was defined and criteria of visual occlusion were proposed. Secondly, a geometric occlusion design formula was established to mimic the visual recognition process of traffic signs on a curved highway, yielding the formula to calculate the visibility window. Finally, the occlusion design formula was applied into a case study of the Beijing-Hong Kong-Macau Expressway (Hunan section), in which visibility windows were calculated and analyzed. The obtained results verified the correctness and effectiveness of the occlusion design formula developed in this study.http://dx.doi.org/10.1155/2020/4291018 |
| spellingShingle | Jian Xiao Jian Zhao Liulin Yang Juanxia He Yu Li Yuxiao Li Study on the Deocclusion of the Visibility Window of Traffic Signs on a Curved Highway Journal of Advanced Transportation |
| title | Study on the Deocclusion of the Visibility Window of Traffic Signs on a Curved Highway |
| title_full | Study on the Deocclusion of the Visibility Window of Traffic Signs on a Curved Highway |
| title_fullStr | Study on the Deocclusion of the Visibility Window of Traffic Signs on a Curved Highway |
| title_full_unstemmed | Study on the Deocclusion of the Visibility Window of Traffic Signs on a Curved Highway |
| title_short | Study on the Deocclusion of the Visibility Window of Traffic Signs on a Curved Highway |
| title_sort | study on the deocclusion of the visibility window of traffic signs on a curved highway |
| url | http://dx.doi.org/10.1155/2020/4291018 |
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