High-Speed Weigh-In-Motion Scales

High-Speed Weigh-In-Motion, or HS-WIM, solutions consist of load cell based strain gauge scale technology installed in the highway. This technology is superior because strain gauges provide extremely fast reaction & sampling rates needed for accurate dynamic weighing while temperature compensation ensures consistency in harsh environments. The performance, reliability and longevity of Intercomp’s HS-WIM systems provide the best return on investment of any form of WIM technology.

Intercomp’s strain gauge based Strip Scales are a unique alternative to traditional sensor based technology yet a more accurate and longer lasting alternative for ASTM Type I and II applications. Installed within grooves less than 3 inches (75mm) in the pavement, the strip load cell delivers lower cost because of the minimal time & labor associated with installation and maintenance.

Dual Staggered Scales are used for ASTM Type III applications. Each scale consists of stainless steel hermetically sealed strain gauge load cells which are certified for accuracy and performance by US and European government metrology authorities.  The scales are installed flush with the pavement and designed to reject noise & vibration for superior accuracy. Their robust construction provides the greatest longevity for any form of high speed dynamic weighing.

HS-WIM systems use loops and sensors to detect oncoming vehicles, axle distances and can provide error messages for drivers crossing outside the lane of traffic and other associated null readings. Cameras, variable messaging and in-cab devices are capable of working in tandem with permanent scale stations to allow vehicles within acceptable tolerances to bypass, thereby reducing the cost on operators and enabling enforcement to focus efforts on the most probable offenders.

Virtual Weigh-In-Motion or V-WIM systems are an unattended, unmanned means of automatically collecting data. V-WIM relies on the same HS-WIM scale technology and is coupled with cameras with optical character recognition, license plate reader technology and wireless output to collect a variety of traffic data, such as GVW, axle weight, vehicle class, ID and imaging, all of which can be accessed from a remote location. This technology is aiding engineers and road designers in studying traffic characteristics as they relate to traffic flow, pavement design and degradation.