The inspectors check the necessary paperwork, including Hours of Service log, License, and Driver and Vehicle Inspection Report (DVIR). This inspection is the standard inspection which covers basic truck and driver inspections. The inspection levels are divided into 6. While the truck is being weighed, inspections are ongoing by the officials at the stations. What Happens At Weigh Station Inspections? There are even new generation weigh-in-motion scales that weigh vehicles at highway speeds. Another kind is the one-stop truck scale that is arranged in such a way that the total weight of the truck is measured once the truck stops on the scale.Īlthough the one-stop truck scale is an upgrade from the one-axle truck scale, it is still slow compared to a weigh-in-motion truck scale that works just as its name describes, making the weighing process faster. This can be a really slow process when the truck has a very long trailer. One-axle truck scales, for instance, require that the truck stops for measurement each time the wheel is positioned on the scale. During compression, the strain gauges send electric current to the junction box, which measures the electric current and apportions an equivalent weight to the truck.ĭepending on the technology age, truck scales measure weights with varying levels of efficiency. The bending plate truck scale makes use of metal plates with strain gauges in them. Under the truck scale, an electric current is sent from the conductive material to the sensors, where the weight is determined. Piezoelectric truck scales make use of sensors installed in conductive materials to measure truck weights. It is in this junction box that the current gets measured and mapped to an appropriate weight. ![]() When the truck's weight compresses the electric wire, it sends the electric current to a junction box. Load cell truck scales are made of concrete or steel with an electric wire as a sensitized strain gauge. Their working mechanism includes the use of electric currents to measure weights. Truck scales are the equipment with which trucks are measured at weigh stations.
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