Taking the subway is a very common mode of transportation in daily life in South Korea. To ensure a smooth journey and show respect for others, passengers need to pay attention to some basic matters.

Firstly, the operating hours of the subway in South Korea usually start around 5 a.m. and end at 12 midnight. The first and last train times on different lines may vary slightly. Passengers can check the specific information through the timetable inside the subway station or the mobile application. In addition, the subway services in South Korea are very frequent. During peak hours, there is usually a train every 2 to 5 minutes, while during off-peak hours, the frequency may be extended to about 10 minutes.

Secondly, in terms of ticket purchasing, apart from the traditional one-way tickets, both tourists and residents can use transportation cards such as T-money cards or Kakao Pay. The T-money card is a rechargeable transportation card that can be used on almost all public transportation vehicles across the country, which is very convenient. A certain deposit is required when purchasing. The deposit can be refunded when the card is returned (after deducting the handling fee). In addition, many smart phones support NFC functionality, allowing T-money cards to be directly bound to the phone for use.

When it comes to bus etiquette, South Koreans attach great importance to public order and courtesy. Passengers should queue up voluntarily for the train, get off first and then get on to avoid congestion. In the carriage, try to avoid speaking loudly or making phone calls. Your mobile phone should be set to silent mode. In addition, on South Korean subways, there are priority seats (usually yellow seats near the doors), which are reserved for the elderly, pregnant women, people with disabilities and passengers with children. Healthy passengers should avoid occupying these seats.

In terms of diet, eating in subway carriages is not allowed, especially for foods with strong odors. Regarding beverages, although there is no explicit ban, it is recommended to avoid drinking those that are prone to spills as much as possible to prevent disturbing other passengers. In addition, convenience stores are usually set up in subway stations in South Korea, where passengers can purchase food and beverages.

In terms of safety, the overall security of the South Korean subway is good, but it is still necessary to take good care of personal belongings, especially during peak hours and on popular lines. There are surveillance cameras and security personnel in the subway station. In case of emergency, you can use the emergency buttons on the platform or in the carriages to contact the staff.

Finally, the barrier-free facilities in South Korea's subways are relatively complete. Most subway stations are equipped with elevators, ramps and blind paths, which are convenient for passengers with mobility issues to use. In addition, there is a dedicated space for wheelchairs inside the carriage. Passengers can seek help from the staff if they need it.

In conclusion, understanding and abiding by the relevant precautions of the South Korean subway not only enhances one's own travel experience but also demonstrates good public qualities, creating a comfortable riding environment for others.