As the main representative of modern traffic engineering construction, expressway has brought a comprehensive role in promoting the economic development. In the development of expressway, the mode of interconnection with modern high-tech electronic equipment has been realized, e.g., toll collection, communication, monitoring, distribution and power supply, but the lightning protection measures are not enough, which brings a certain security threat and damage to the daily operation equipment of the highway. 

In order to reduce and prevent the lightning damage of expressway, PTG provides an complete solution based on three systems of highway communication, monitoring and toll collection, including:           

     - Mid-voltage AC Substation           

     - Low-voltage power supply and distribution system for toll station, square lighting, tunnel etc.

     - Monitoring system           

     - Communication system           

     - Environmental monitoring and weighing system

In accordance to:  

      1. IEC 62305: Protection against Lightning

       2. IEC 61312: Protection against Lightning Electromagnetic Impulse

       3. IEC 61643-11: Low-voltage Surge Protective Devices

       4. IEC 61643-21: Surge protective devices connected to telecommunications and signaling networks - Performance requirements and testing methods