Characterization of truck traffic in Michigan for the new mechanistic empirical pavement design guide.
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2009-12-01
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Edition:Final report.
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Abstract:The purpose of this study is to characterize traffic inputs in support of the new Mechanistic- ; Empirical Pavement Design Guide (M-E PDG) for the state of Michigan. These traffic ; characteristics include monthly distribution factors (MDF), hourly distribution factors (HDF) ; truck traffic classifications (TTC), axle groups per vehicle (AGPV), and axle load distributions ; for different axle configurations. Weight and classification data was obtained and used in this ; study from 44 Weigh-in-Motion (WIM) and classification stations located throughout the state ; of Michigan to develop Level 1 (site-specific) traffic inputs. Cluster analyses were conducted ; to group sites with similar characteristics for development of Level 2 (regional) inputs. Finally ; data from all sites were averaged to establish the statewide Level 3 inputs. The effects of the ; developed hierarchical traffic inputs on the predicted performance of rigid and flexible ; pavements were investigated using the M-E PDG. In addition, the impact of traffic data ; coverage (data collection period) was also explored by statistically comparing the performance ; differences between one week per month and continuous (year-round) input data. An algorithm ; based on discriminant analyses was developed to acquire the appropriate Level 2 traffic ; characteristic for pavement design.
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Main Document Checksum:urn:sha256:5a465d05f978aefa41d11572101447e78151aab95408f1981e1a4ae50c5baebb