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          High-tech devices make holiday travel more comfortable
          
        
          
      
          
      
          
        
          By Wang Danning and Chen Ziyan | 
          chinadaily.com.cn |
          Updated: 2024-02-05 17:05
          
          
          
          
        


        
      
          
      
          
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          4. Unmanned boat
           

           
  
 
          
   Workers carry out preparation work in Chengdu, Southwest China's Sichuan province, on Jan 27, 2024. [Photo/Xinhua] 
 
           

           

          Unmanned boats have been used for bridge inspection along the Chengdu-Chongqing intercity railway. Workers can measure the cross-section of riverbed in upstream and downstream areas with a remote control, and collect accurate and comprehensive data, thus offering a scientific basis for bridge maintenance.
           

           
  
 
          
   A worker operates an unmanned boat in Chengdu, Southwest China's Sichuan province, on Jan 27, 2024. [Photo/Xinhua] 
 
           

           

          
        
          

        
        
      
          
        
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