1. According to the prohibition and restrictions policy of the subway, carrying sharp objects such as knives is prohibited. Therefore, it is generally not allowed to bring a fruit knife onto the subway.
2. However, some cities allow small knives with blades less than 6 cm in length to be carried onto the subway, as long as they are placed in a sealed package or container. So, if the fruit knife meets the criteria, then it may be allowed.
3. It is worth noting that even if the city allows small knives, it is still necessary to be cautious when using or carrying them. Carrying a fruit knife in public places is likely to cause people's uneasiness, which could lead to potential accidents or security risks.
4. In any case, it is recommended to check the specific prohibition and restriction regulations for the subway system in your city. And, if uncertain, it is better to leave the fruit knife at home to avoid any mishap.
