Low-cost piezoelectric weigh-in-motion systems in Oregon : 1988-1993 : final report.
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1994-12-01
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Alternative Title:Low-cost piezoelectric weigh-in-motion systems in Oregon : 1988-1993.
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Abstract:In 1988, The Oregon Department of Transportation installed low-cost piezoelectric weigh-in-motion cables at three locations and in ten lanes on Interstate 5 and 205. This report documents the installation of the systems, problems, and results from 1988 to 1993.
The findings show that these systems are sensitive to pavement temperatures and need to auto-calibrated. Their accuracies vary according to the pavement condition and type. Multi-sensor piezoelectric weigh-in-motion systems were evaluated with respect to improving accuracy. The results show that multi-sensors do improve weight accuracies. These systems should be used only in moderate to low traffic volume roads, rather than on the interstate or primary highways, and primarily for data collection purposes.
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