VWS2-1 Cardinal Dual Lane Virtual Weigh Station With QWIM-1 In-motion Scales Cardinal’s VWS2-1 Virtual Weigh Station is the answer to your commercial weight enforcement concerns. The VWS2-1, uses two Cardinal’s QWIM-1 High-Speed Quartz-Based In-Motion Vehicle Scales to monitor traffic in two different lanes and to identify those vehicles that exceed weight limits.