The Cardinal quartz sensor weigh-in-motion scale consists of an array of either four or eight sensors installed into the pavement. An installed sensor is shown to the left and a sensor cross section is detailed below.

Each sensor comes in either a 30" or 39" length, so that the entire lane width can be covered using an array of these sensors, regardless of the lane width. The quartz system is designed in such a way to measure left and right weights. Furthermore, the system is designed so that even if some sensors fail, the system will still be functional.

This system can weigh and classify vehicles, and has shown to be very accurate with an accuracy level within ASTM E1318-94 specifications. In fact, the quartz sensors were tested by the Washington State DOT in an effort to compare accuracy to a leading manufacturer's weighbridge.

Cardinal quartz sensor weigh-in-motion systems are used in highway weight stations and ports of entry to indentify heavily loaded vehicles and direct them to a static scale for enforcement weighing. They may also be utilized for data collection and traffic monitoring activities as well, when accurate weigh data is required at highway speeds.

Cardinal weigh-in-motion systems may also include automatic vehicle identification (AVI) equipment to identify transponder-equipped trucks passing over the scale. Static scales, over-height sensors, and an integrated traffic control network can also be added for a complete enforcement screening station solution.

Cardinal weigh-in-motion systems can be custom tailored to meet your specific requirements. Let our WIM specialists help you with your weighing-in-motion application.