Analysis of factors temporarily impacting traffic sign readability
Traffic sign readability can be affected by the existence of dirt on traffic sign faces. However, among damaged signs, dirty traffic signs are unique since their damage is not permanent and they just can be cleaned instead of replaced. This study aimed to identify the most important factors contribu...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
KeAi Communications Co., Ltd.
2016-10-01
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| Series: | International Journal of Transportation Science and Technology |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2046043016300120 |
| _version_ | 1797716369235509248 |
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| author | Majid Khalilikhah Kevin Heaslip |
| author_facet | Majid Khalilikhah Kevin Heaslip |
| author_sort | Majid Khalilikhah |
| collection | DOAJ |
| description | Traffic sign readability can be affected by the existence of dirt on traffic sign faces. However, among damaged signs, dirty traffic signs are unique since their damage is not permanent and they just can be cleaned instead of replaced. This study aimed to identify the most important factors contributing to traffic sign dirt. To do so, a large number of traffic signs in Utah were measured by deploying a vehicle instrumented with mobile LiDAR imaging and digital photolog technologies. Each individual daytime digital image was inspected for dirt. Location and climate observations obtained from official sources were compiled using ArcGIS throughout the process. To identify contributing factors to traffic sign dirt, the chi-square test was employed. To analyze the data and rank all of the factors based on their importance to the sign dirt, Random forests statistical model was utilized. After analyzing the data, it can be concluded that ground elevation, sign mount height, and air pollution had the highest effect on making traffic signs dirty. The findings of this investigation assist transportation agencies in determining traffic signs with a higher likelihood of sign dirt. In this way, agencies would schedule to clean such traffic signs more frequently. |
| first_indexed | 2024-03-12T08:20:26Z |
| format | Article |
| id | doaj.art-13946847deba4cef8d2c008fdea99ed6 |
| institution | Directory Open Access Journal |
| issn | 2046-0430 |
| language | English |
| last_indexed | 2024-03-12T08:20:26Z |
| publishDate | 2016-10-01 |
| publisher | KeAi Communications Co., Ltd. |
| record_format | Article |
| series | International Journal of Transportation Science and Technology |
| spelling | doaj.art-13946847deba4cef8d2c008fdea99ed62023-09-02T18:28:32ZengKeAi Communications Co., Ltd.International Journal of Transportation Science and Technology2046-04302016-10-0152606710.1016/j.ijtst.2016.09.003Analysis of factors temporarily impacting traffic sign readabilityMajid KhalilikhahKevin HeaslipTraffic sign readability can be affected by the existence of dirt on traffic sign faces. However, among damaged signs, dirty traffic signs are unique since their damage is not permanent and they just can be cleaned instead of replaced. This study aimed to identify the most important factors contributing to traffic sign dirt. To do so, a large number of traffic signs in Utah were measured by deploying a vehicle instrumented with mobile LiDAR imaging and digital photolog technologies. Each individual daytime digital image was inspected for dirt. Location and climate observations obtained from official sources were compiled using ArcGIS throughout the process. To identify contributing factors to traffic sign dirt, the chi-square test was employed. To analyze the data and rank all of the factors based on their importance to the sign dirt, Random forests statistical model was utilized. After analyzing the data, it can be concluded that ground elevation, sign mount height, and air pollution had the highest effect on making traffic signs dirty. The findings of this investigation assist transportation agencies in determining traffic signs with a higher likelihood of sign dirt. In this way, agencies would schedule to clean such traffic signs more frequently.http://www.sciencedirect.com/science/article/pii/S2046043016300120 |
| spellingShingle | Majid Khalilikhah Kevin Heaslip Analysis of factors temporarily impacting traffic sign readability International Journal of Transportation Science and Technology |
| title | Analysis of factors temporarily impacting traffic sign readability |
| title_full | Analysis of factors temporarily impacting traffic sign readability |
| title_fullStr | Analysis of factors temporarily impacting traffic sign readability |
| title_full_unstemmed | Analysis of factors temporarily impacting traffic sign readability |
| title_short | Analysis of factors temporarily impacting traffic sign readability |
| title_sort | analysis of factors temporarily impacting traffic sign readability |
| url | http://www.sciencedirect.com/science/article/pii/S2046043016300120 |
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