The short holiday that has just passed is the first long holiday under the conditions of normalized epidemic prevention and control. From October 1st to 8th, the average daily traffic of national highways exceeded 47.66 million vehicles. How to solve the problem of noise disturbance from high-speed vehicles has once again become a hot spot. In the context of the new infrastructure, various digital technologies have emerged one after another. A printed noise barrier appeared on the Suzhou Ring Expressway. Look at the report.