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

dc.contributor.authorWalubita, Lubinda F.
dc.contributor.authorMahmoud, Enad
dc.contributor.authorFuentes, Luis
dc.contributor.authorKomba, Julius Joseph
dc.contributor.authorTeshale, Eyoab Zegeye
dc.contributor.authorFaruk, Abu N.M.
dc.date.accessioned2021-02-10T09:36:07Z
dc.date.available2021-02-10T09:36:07Z
dc.date.issued2019
dc.description.abstractAs 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_ZA
dc.description.departmentCivil Engineeringen_ZA
dc.description.librarianam2021en_ZA
dc.description.urihttps://www.astm.org/DIGITAL_LIBRARY/JOURNALS/TESTEVAL/index.htmlen_ZA
dc.identifier.citationWalubita, L.F., Mahnoud, E., Fuentes, L. et al. 2019, 'Portable WIM systems : comparison of sensor installation methods for site-specific traffic data measurements', Journal of Testing and Evaluation, vol. 49, no. 3., pp. 1-19.en_ZA
dc.identifier.issn0090-3973 (print)
dc.identifier.issn1945-7553 (online)
dc.identifier.other10.1520/JTE20190040
dc.identifier.urihttp://hdl.handle.net/2263/78385
dc.language.isoenen_ZA
dc.publisherASTM Internationalen_ZA
dc.rightsCopyright by ASTM Int'l (all rights reserved)en_ZA
dc.subjectTrafficen_ZA
dc.subjectVolumeen_ZA
dc.subjectLoad spectraen_ZA
dc.subjectWeighten_ZA
dc.subjectPortable weigh-in-motionen_ZA
dc.subjectSensoren_ZA
dc.subjectMetal plateen_ZA
dc.subjectPocket tapeen_ZA
dc.subjectWeigh-in-motion (WIM)en_ZA
dc.titlePortable WIM systems : comparison of sensor installation methods for site-specific traffic data measurementsen_ZA
dc.typeArticleen_ZA

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