Core Viewpoint - The article discusses the safety concerns regarding the use of umbrellas on high-speed train platforms during rainy weather, emphasizing the potential risks of electric shock due to the high voltage of the contact wire above the platform [1][2]. Group 1: Safety Regulations and Standards - The contact wire of high-speed rail can reach a voltage of 27.5 kV, which is 125 times higher than the standard residential voltage of 220 V [1]. - To ensure safety, a minimum distance of 2 meters must be maintained between individuals and the high-voltage contact wire [1][2]. - The height of the contact wire above the rail is at least 5.7 meters, and the platform safety line is more than 1 meter from the platform edge, ensuring that passengers can safely use umbrellas if they remain within these guidelines [2]. Group 2: Practical Considerations - Calculations show that a passenger standing at a safe distance with an umbrella would maintain a distance of 3.23 meters from the contact wire, thus satisfying safety requirements [2]. - Despite the theoretical safety, the railway department advises against using umbrellas on platforms due to visibility issues and the potential for accidents during peak travel times [2][3]. Group 3: Additional Safety Hazards - The airflow created by trains entering and exiting the station can create a low-pressure area that may pull umbrellas or passengers towards the train, posing additional risks [3]. - In adverse weather conditions, umbrellas can be blown onto the contact wire, potentially causing power outages and disrupting train operations [3].