A state-of-the-art, Advanced,
High-Speed, Weigh-In-Motion (WIM) system has been designed, installed,
and tested on the west bound side of Interstate I-75/I-40 near the Knox
County Weigh Station. The project is a Cooperative Research and Development
Agreement (CRADA) between Oak Ridge National Laboratory (ORNL) and International
Road Dynamics, Inc. (IRD) sponsored by the Office of Uranium Programs,
Facility and Technology Management Division of the Department of Energy
under CRADA No. ORNL95-0364. ORNL, IRD, the Federal Highway Administration,
the Tennessee Department of Safety and the Tennessee Department of Transportation
have developed a National High Speed WIM Test Facility for test and evaluation
of high-speed WIM systems. The WIM system under evaluation includes
a Single Load Cell WIM scale system supplied and installed by IRD.
ORNL developed a stand-alone, custom data acquisition system, which acquires
the raw signals from IRDís in-ground single load cell transducers.
Under a separate contract with the Federal Highway Administration, ORNL
designed and constructed a laboratory scale house for data collection,
analysis and algorithm development. An initial advanced weight-determining
algorithm has been developed. The new advanced WIM system provides
improved accuracy and can reduce overall system variability by up to 30%
over the existing high accuracy commercial WIM system.
For more information, contact