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South Dakota Department of Transportation
Project Synopsis

Title: Evaluation of Portable WIM
Project Researcher: Ramzi Taha,
Project Manager:
Research Period: -
Cost: $0.00

Problem Statement:SDDOT has used weigh-in-motion technology to acquire truck weight information for Federal Highway Administration (FHWA) requirements as well as for in house use since 1983. For the most part data has been collected with a bridge WIM system that was developed in house. That system has performed well, and a low-cost version is nearly completed, but its use is restricted to specific bridge locations. A bending-plate WIM system was installed on I-90 near Tilford last summer. Although it can be moved, it is not portable. A portable high-speed WIM system is needed for truck weight data collection at temporary monitoring locations, including at least five of the states Strategic Highway Research Program sites (SHRP). Also, weight data is necessary to the operation of the Pavement Management System.

The Highway Patrol has considerable interest in a system of this type for screening truck weights prior to an enforcement scale. The heavy truck traffic at weigh stations is steadily increasing making screening a viable alternative to additional manpower.


Research Objectives:
1  Obtain and demonstrate a portable high-speed WIM system with the highest degree of accuracy possible to provide weights and planning data.
2  Evaluate the practicality of the system for weight enforcement screening.

Research Tasks:
1  Conduct an in-depth literature review including product specifications, independent research reports, and inquiries of other states results with portable systems.
2  Identify a portable WIM system that: (A.) will operate continuously in a South Dakota environment (B.) can be set up with minimal manpower, preferably one person (C.) can be set up with no or minimal traffic control, possibly with permanen
3  Select an installation site based on consultation with: (A.) SDDOT Data Inventory (for possible SHRP site applicability) (B.) SD Highway Patrol (for enforcement purposes) (C.) SDDOT Engineering, Project Development (for possibility of inco
4  Before system purchase, submit an interim report to the technical panel describing: system type, predicted accuracy, cost, verification method, and installation site location.
5  Install and evaluate system after technical panel approval.
6  Document system performance in final report to include: method of testing, accuracy, ease of use, installation and calibration procedures, reliability, and recommendations for future purchases.

Documents Available:

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