The driver drives the vehicle to the scale entry point → The traffic light shows green → The vehicle passes through the front-end ground induction loop → The front-end barrier gate is lifted → the vehicle goes onto the scale → the traffic light shows red → the reader senses the information on the tag card → The infrared detects whether the vehicle is crossing the edge → The front-end barrier gate drops → after the vehicle comes to a complete stop, the weight data is automatically weighed, the weighing picture is captured by video and saved synchronously → The rear barrier gate is lifted → the weight is announced by voice The weight is displayed on the large screen → the traffic light shows green → the vehicle gets off the scale → The vehicle passes through the ground induction loop at the rear end → The rear barrier drops → The system returns to the initial state, and the lower vehicle continues the previous process.