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Why are trains not afraid of snow?
Track heating system, snow removal equipment, gravel spreading, advanced signal system, etc.

1. Track heating system: In some areas, railway tracks are equipped with heating systems, which can melt ice and snow by electric heating or steam heating.

2. Snow removal equipment: Railway departments are usually equipped with professional snow removal equipment such as snow removal vehicles and snow blowers, which can clear the snow on the track in time.

3. Paving gravel: As mentioned earlier, the train can pave gravel to increase the friction between the wheels and the rails and improve the grip.

4. Advanced signal system: Modern railway signal system can adapt to various weather conditions and ensure the safe operation of trains.