Recently, the phenomenon of high-speed rail trains delayed due to freezing in many places in Hubei has attracted widespread attention. Netizens have taken pictures of the green train speeding through the wind and snow, which is amazing. This year, it turned out to be the first green train to arrive home, netizens joked. So why is the high-speed train afraid of freezing, but the green train is unharmed? 
This has to start with the power of high-speed rail. The "pantograph" of the high-speed rail is the part of the high-speed rail that is in contact with the catenary, and it can obtain power and electrical energy when it glides. However, in the event of freezing rain and freezing, the contact between the pantograph and the catenary becomes poor, resulting in uneven current, which leads to the phenomenon of "sparks with lightning". Over time, the pantograph can be damaged. In addition, the ice of the wheels and rails will also affect the performance of the brakes, so that the high-speed rail has to travel at low speeds, and even some trainsets will directly lose power and cannot start. 
The green train, on the other hand, uses an internal combustion engine as the power source, which burns diesel fuel to drive the generator and then uses electricity to drive the wheels. This type of power does not rely on a catenary, so it is more adaptable to snowy conditions. In addition, the speed of the green train is relatively low, and the safety risk is also small, so it can still operate normally in snowy days. 
It can be seen that high-speed rail and green trains have shown very different adaptability when dealing with snow. This not only shows the characteristics of different modes of transportation, but also reminds us that when faced with natural disasters, we need to take appropriate measures according to the actual situation. This time, the green train arrived home before the high-speed rail