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Portable WIM systems: Comparison of sensor installation methods for site-specific traffic data measurements

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dc.contributor.author Walubita, LF
dc.contributor.author Mahmoud, E
dc.contributor.author Fuentes, L
dc.contributor.author Komba, Julius J
dc.contributor.author Teshale, EZ
dc.date.accessioned 2020-03-17T13:06:22Z
dc.date.available 2020-03-17T13:06:22Z
dc.date.issued 2021-05
dc.identifier.citation Walubita, L.F. et al. 2021. Portable WIM systems: Comparison of sensor installation methods for site-specific traffic data measurements. Journal of Testing and Evaluation, vol. 49, no. 3 en_US
dc.identifier.issn 0090-3973
dc.identifier.issn 1945-7553
dc.identifier.uri https://doi.org/10.1520/JTE20190040
dc.identifier.uri https://www.astm.org/DIGITAL_LIBRARY/JOURNALS/TESTEVAL/PAGES/JTE20190040.htm
dc.identifier.uri http://hdl.handle.net/10204/11327
dc.description Copyright: 2021 ASTM. This is a pre-print version. The definitive version of the work is published in the Journal of Testing and Evaluation, vol. 49, no. 3 en_US
dc.description.abstract As an alternative to costly permanent weigh-in-motion (WIM) stations that are mostly limited to major interstate highways, portable WIM systems are often used as a substitute or supplement to routinely collect site-specific traffic data (both volume and weight) for pavement design and analysis applications. By comparison, portable WIM systems are cost effective and much easier to install at any desired highway site/location. However, accuracy, reliability, and data quality have been some of the key challenges of portable WIM systems. As a means of addressing these challenges, this field pilot study was undertaken to comparatively evaluate two different sensor installation methods for routine traffic data measurements: the pocket tape and metal plate methods. The two methods were comparatively evaluated in terms of their practicality, simplicity of installation, cost effectiveness, resource/manpower needs, environmental sensitivity and endurance, consistency, data accuracy, and statistical reliability of the traffic data measurements. Along with a side-by-side field validation using permanent WIM data, the findings from the study indicated that the metal plate sensor installation method is superior to the pocket tape method, particularly in terms of data accuracy, data quality, statistical reliability, and endurance. Its traffic data accuracy rate was found to be 87-91 % compared with 79 % for the pocket tape method, which exhibited a significant loss of sensitivity and data accuracy after 7 d of traffic measurements. Overall, the conclusions of this study provide technical merit and preference to the metal plate method over the pocket tape sensor installation method, particularly for traffic data measurements exceeding 7 d. en_US
dc.language.iso en en_US
dc.relation.ispartofseries Workflow;23320
dc.subject Weigh-in-motion en_US
dc.subject WIM en_US
dc.subject Traffic data measurements en_US
dc.title Portable WIM systems: Comparison of sensor installation methods for site-specific traffic data measurements en_US
dc.type Article
dc.identifier.apacitation Walubita, L., Mahmoud, E., Fuentes, L., Komba, J. J., & Teshale, E. (2021). Portable WIM systems: Comparison of sensor installation methods for site-specific traffic data measurements. http://hdl.handle.net/10204/11327 en_ZA
dc.identifier.chicagocitation Walubita, LF, E Mahmoud, L Fuentes, Julius J Komba, and EZ Teshale "Portable WIM systems: Comparison of sensor installation methods for site-specific traffic data measurements." (2021) http://hdl.handle.net/10204/11327 en_ZA
dc.identifier.vancouvercitation Walubita L, Mahmoud E, Fuentes L, Komba JJ, Teshale E. Portable WIM systems: Comparison of sensor installation methods for site-specific traffic data measurements. 2021; http://hdl.handle.net/10204/11327. en_ZA
dc.identifier.ris TY - Article AU - Walubita, LF AU - Mahmoud, E AU - Fuentes, L AU - Komba, Julius J AU - Teshale, EZ AB - As an alternative to costly permanent weigh-in-motion (WIM) stations that are mostly limited to major interstate highways, portable WIM systems are often used as a substitute or supplement to routinely collect site-specific traffic data (both volume and weight) for pavement design and analysis applications. By comparison, portable WIM systems are cost effective and much easier to install at any desired highway site/location. However, accuracy, reliability, and data quality have been some of the key challenges of portable WIM systems. As a means of addressing these challenges, this field pilot study was undertaken to comparatively evaluate two different sensor installation methods for routine traffic data measurements: the pocket tape and metal plate methods. The two methods were comparatively evaluated in terms of their practicality, simplicity of installation, cost effectiveness, resource/manpower needs, environmental sensitivity and endurance, consistency, data accuracy, and statistical reliability of the traffic data measurements. Along with a side-by-side field validation using permanent WIM data, the findings from the study indicated that the metal plate sensor installation method is superior to the pocket tape method, particularly in terms of data accuracy, data quality, statistical reliability, and endurance. Its traffic data accuracy rate was found to be 87-91 % compared with 79 % for the pocket tape method, which exhibited a significant loss of sensitivity and data accuracy after 7 d of traffic measurements. Overall, the conclusions of this study provide technical merit and preference to the metal plate method over the pocket tape sensor installation method, particularly for traffic data measurements exceeding 7 d. DA - 2021-05 DB - ResearchSpace DP - CSIR KW - Weigh-in-motion KW - WIM KW - Traffic data measurements LK - https://researchspace.csir.co.za PY - 2021 SM - 0090-3973 SM - 1945-7553 T1 - Portable WIM systems: Comparison of sensor installation methods for site-specific traffic data measurements TI - Portable WIM systems: Comparison of sensor installation methods for site-specific traffic data measurements UR - http://hdl.handle.net/10204/11327 ER - en_ZA


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