## 4 Results  
In this paper, the locations of vertiports, which is the infrastructure necessary to apply urban air mobility (UAM), which has not yet been commercialized in the Seoul metropolitan area, were selected and evaluated, and AEDT software was used to establish UAM routes. A noise priority scenario was then applied based on population distribution. To accomplish this, data from the Statistics Korea's commuting population survey by residents/commuters were collected, and MATLAB was used to show it on the map. The data were clustered using the K-means algorithm to obtain 40 and 100 locations suitable for vertiports. However, if it is impossible to install a vertiport due to mountain, sea, or residential areas, the repositioning process was deemed necessary, and through this process, the final vertiport was selected. While performing the repositioning process in the Seoul metropolitan area, it was difficult to select the locations of the vertiports because most areas are residential areas. However, the locations of the vertiports were selected by utilizing such areas as Han River Park, Highway IC, and the rooftop of the parking lot building suggested by Uber. It was also determined that a helipad, located on the rooftop of a skyscraper, could serve as a vertiport. In addition, the noise priority scenario shows a 76.9% decrease in the number of people affected by high levels of noise compared to the business priority scenario, which is a simple straight path. In Korea, mountainous areas, airports, and military facilities are concentrated in a narrow land area, so there are many restricted areas for flights; therefore, the development of UAM routes and noise analysis are essential rather than straight lines from the origin to the destination. The demand data used in this paper are the number of commuters provided by Statistics Korea. This was collected through the census and has excellent accuracy. However, it was difficult to express data in large administrative districts, such as Pocheon-si and Hwaseong-si in Gyeonggi-do, or in an administrative district that is divided into two, such as Ansan-si, because information was only given on the administrative districts and the specific origin and destination locations are unknown. However, since a satellite map was used to select the origin and destination of the most likely candidate sites for the location repositioning process, it is expected to be highly utilized as a final vertiport. For this study, the locations of the vertiports were selected using only the number of commuters, but if UAM is commercialized, it is believed that moving for leisure and tourism will also account for a large portion. Therefore, it is necessary to analyze mobility with various purposes and select the locations of the vertiports. Considering the lack of data provided by eVTOL developers, the noise analysis process used helicopters as models and was conducted by distributing residents evenly by administrative districts without using more precise data about the residential area. Therefore, it is believed that a better result would be achieved if the path is created using real eVTOL noise data and more detailed population data, applying the exact area affected by real noise using spatial information rather than just the number of hexagons containing receptors. In addition, noise analysis due to changes in operating altitude and payload is required. On the other hand, for UAM to operate across all administrative districts, noise priority routes must be considered where there is no terrain to reduce noise, such as rivers. For example, for two noise priority scenarios, the scenario that passes through administrative districts with a larger population distribution per hexagon than the other will result in an increase in the population exposed to noise, which will have minimal effect on reducing noise impact.