Installing permanent in-pavement weigh-in-motion (WIM) stations on local roads is very expensive and requires
recurring costs of maintenance trips, electricity, and communication. For county roads with limited average daily
traffic (ADT) volume, such a high cost of installation and maintenance is rarely justifiable. One solution to bring
WIM technologies to local roads is to utilize a portable WIM system, much like pneumatic tube counters used in
short-duration traffic counts. That is, a single unit is reused in multiple locations for few days at a time. This way,
WIM data is obtained without the cost of permanent in-pavement WIM stations. This report describes the results of
a two-year research project sponsored by the Minnesota Department of Transportation (MnDOT) to develop a
portable WIM system that can be readily deployed on local roads. The objective of this project was to develop a
portable WIM system that would be used much like a pneumatic tube counter. The developed system is battery
operated, low cost, portable, and easily installable on both rigid and flexible pavements. The report includes a sideby-
side comparison of data between the developed on-pavement portable WIM system and an in-pavement
permanent WIM system.
Department of Electrical and Computer Engineering; Northland Advanced Transportation Systems Research Laboratories; University of Minnesota Duluth
Kwon, Taek M..
Development of a Weigh-Pad-Based Portable Weigh-In-Motion System.
Minnesota Department of Transportation.
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Kwon, Taek (Center for Transportation Studies, University of Minnesota, 2016-02)
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