This paper was presented at the "Low-volume highways and municipal road networks" session. These proceedings are available on CD-ROM. This paper first reviews practices of traffic loading analysis for secondary highway pavements. A survey on traffic information needs for secondary highways demonstrates a consensus among professionals in the Saskatchewan Highways that AADT and vehicle classification data should be considered in secondary pavement design. Based on vehicle classification data on the secondary highways, ranges of ESAL coefficients were calculated using matrixes of truck type and equivalency factor. The ESAL coefficients for some sections can be more than double of other sections. A traffic-loading index is proposed for use in structure selection process to reflect traffic volume and loading situations on secondary highways. Vehicle classification counts and AADT are used to calculate the traffic loading indices. The accuracy of vehicle classification counts and impacts of such accuracy on traffic loading analysis and secondary pavement design are analyzed and discussed based on the continuous AVC data. (A)
Abstract