## 5 Conclusions and Future Work  
The purpose of this research is to extract maritime traffic routes carried out at the national level and to create major routes through which many ships pass. So far, there has been no outcome from the creation of maritime route maps. There are various studies on creating waypoints and legs to create a network of maritime traffic, but the research data extracted to the area where ships navigate are limited to the application of MSP. Furthermore, passage plans for vessel navigation are developed and implemented based on the navigation officers' and masters' experience. As ships execute their passage plans, a massive amount of AIS data is accumulated, and if expressed as a ship trajectory, it is possible to determine which route the ship chose and followed. In other words, a lot of AIS data are data from the past that safely completed the operation, so the result value itself can be reliable data. There are two reasons for establishing Korea's main maritime traffic route. * First, it is to protect the area of the new and renewable energy zone that is being actively developed recently and the area of the ship passage within the MSP. So far, the  
\begin{table}
\begin{tabular}{c c c c c c} \hline \hline
**Vertex** & **Width of Main Route** & **Difference** & **Vertex** & **Width of Main Route** & **Difference** \\
**No. ** & **(km)** & **(km)** & **No. ** & **(km)** & **(km)** \\ \hline
1 & 11.04 & +4.64 & 18 & 18.86 & +12.46 \\
2 & 7.23 & +0.83 & 19 & 27.64 & +21.24 \\
3 & 8.49 & +2.09 & 20 & 25.66 & +19.26 \\
4 & 13.77 & +7.39 & 21 & 27.71 & +21.31 \\
5 & 15.00 & +8.60 &domestic shipping area has only been protected in a very small area, which is restricted to the vicinity of ports. To keep ship routes to a minimum, a 50% density analysis was used for cargo ships, tanker ships, passenger ships, and towing ships larger than 60 m, but not all ships. This result does not use all the data, and it is essential to keep the area to which these ships navigate. Based on the density analysis result, it is divided into three routes: the main routes, the outer branch route, and the inner branch route. Once again, it is divided into routes that cannot be moved or changed and routes that allow movement and change through appropriate regulations. * Second, domestic maritime traffic routes are designed to respond to the emergence of MASS in the future. The massive amount of AIS data used in this analysis is a historical record of ships operating safely and efficiently. If a ship's navigation route is chosen with such conviction based on data, it is determined that it can be applied to the route of future ships. If a country's maritime route is selected and major waypoints are presented, it is expected that MASS will be able to use a route that connects the world beyond one country. One limitation is that data from four different types of ships larger than 60 m were used to determine the most irreversible main route for this study. As a result of the characteristics of its cargo, each vessel's operation pattern and port differ. Furthermore, the density analysis result was set at 50%, and the maritime traffic route was chosen. Although there is a point in using different characteristics of Korea in the results shown using different values from previous studies, it is necessary to analyze them by applying various percentages. The limitations are planned to be carried out as part of a future study, and we will attempt to extract maritime traffic routes based on various data that do not limit other ship types and lengths. Conceptualization, I.-S.C. and J.-S.L. ; methodology, I.-S.C. and J.-S.L. ; software, J.-S.L. ; validation, I.-S.C. and J.-S.L. ; formal analysis, J.-S.L. ; investigation, J.-S.L. ; resources, J.-S.L. ; data curation, J.-S.L. ; writing--original draft preparation, J.-S.L. ; writing--review and editing, I.-S.C. and J.-S.L. ; visualization, J.-S.L.