Systems Weigh-in-Motion (WIM) WIM System Applications Automated Weigh Stations
Automated Weigh Stations
At weigh stations, weigh-in-motion (WIM) systems provide preliminary dynamic weight readings which can be used to preclear and automatically sort vehicles. The truck traffic over the static scales can be minimized to target only those vehicles which are suspected of being overweight. In some cases, trucks can be precleared through a weigh station, without even slowing down along the mainline. On bypass and secondary roads, IRD's Virtual Weigh Station can be used to identify suspected overloaded trucks and offenders. In other cases portable WIM equipment, such as the DAW 300PC, can be used for spot checks on back roads and alternative routes that are not protected with weigh stations. If there is a possibility of a truck being overweight based on portable WIM results, it is directed to a nearby static scale for more accurate weighing.
IRD integrates weigh-in-motion technology with a combination of other technologies, including automatic vehicle identification (AVI) systems, freeze frame cameras, fiber optic signs (fixed, changeable and fully variable), static scales, databases (varying from local to nationwide), lane control signals and other weigh station components. IRD develops and modifies software using its standardized modules that are customized to meet the particular needs of each site. By using a majority of off-the-shelf hardware and components, service and maintenance costs are minimized.
- Weight Watching: How an automated weighstation improves transport safety and efficiency (pdf - 351 kb)
- Weigh2GoBC Preclearance Program (pdf - 204 kb)
- Alberta Partners in Compliance (PIC) Preclearance Program (pdf - 529 kb)
- IRD Commercial Vehicle Enforcement Brochure (pdf - 982 kb)
(PDF files require Adobe Reader)
Video
Opening of the Red Rock, BC Inspection Station
IRD was the system integrator for British Columbia's Weigh2GoBC program. IRD supplied Single Load Cell (SLC) Weigh-In-Motion Scales, Inductive Loops, Piezoelectric Sensors, Automatic Vehicle Indentification (AVI) Readers, iSinc System Electronics, and Operator Interface Software for this project.
