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A Mixture Model for Predicting Patterns of Spatial Repeatability in Heavy Vehicle Fleets
Date Issued
09 July 2008
Date Available
23T12:45:04Z January 2018
Abstract
This paper presents a statistical heavy vehicle fleet model for predicting patterns of statistical spatial repeatability (SSR), i.e., the mean pattern of dynamic tyre force applied to a section of pavement by a large number of similar vehicles. Data from a Multiple Sensor Weigh-in-Motion (MS-WIM) system, collected for a sufficiently large number of vehicles, can be used to identify and measure SSR. A Bayesian analysis technique is used to infer the statistical distributions of fleet properties, given measured axle forces from MS-WIM data. The topic is introduced with the simple example of using the technique to predict distributions of axle weights, based on simulated MS-WIM measurements. The statistical Mixture model presented herein builds on previously presented models to add the necessary complexity and flexibility to represent the bimodal nature of truck fleets (e.g. the presence of both unladen and laden vehicles in the population). The model is numerically validated using simulated MS-WIM data to condition the Bayesian analysis.
Sponsorship
Irish Research Council for Science, Engineering and Technology
Type of Material
Conference Publication
Web versions
Language
English
Status of Item
Peer reviewed
Conference Details
3rd European Pavement and Asset Management Conference (EPAM3), Coimbra, Portugal, 7-9 July 2008
This item is made available under a Creative Commons License
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