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Edition:Final report; 6/14/2000-12/31/2006.
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Abstract:This research finished the development and implementation of a novel and durable, higher voltage,
and lower temperature dependant weigh-in-motion (WIM) sensor that was begun under an earlier
research project. These better sensors will require fewer lane closings and replacements than the
existing sensors. They will also aid the Departments of Transportation to better identify those
vehicles, which use the nations major highways, that do not comply with the current weight
restrictions that are placed on larger vehicles. The primary focus of the research was to create a full
scale WIM sensor that is less temperature dependent and more durable than traditional WIM sensors.
Traditionally, the data collected from the sensor may be utilized in two ways. The first is by using
static vehicle effects on the sensor, which corresponds to the weight of the vehicle, this data can be
used for enforcement of the vehicle legal weight limits. The second is by using the dynamic loading
of the sensor, which relates to the actual loading that the roadway is experiencing, this data will be
useful to engineers who must design the roadway as well as plan for repair schedules. However, there
is a growing trend to broaden the use of WIM data and use the data to its fullest extent. Instead of just
using WIM data to screen commercial vehicles or for pavement design; there is a new recognition
that good data can be useful for bridge structural analysis, safety analysis, traffic control and
operations, freight management and operations, facility planning and programming, and standards
and policy enforcement as per the recent report “Effective Use of Weigh-in-Motion Data, the
Netherlands Case Study” FHWA October 2007. In lieu of this development, the need for better
sensors to provide good data is more important today than ever before.
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