## 1 Introduction  
Each of South Korea's general road management organizations (Ministry of Land, Infrastructure, and Transport, and regional land management offices, local governments, etc.) manages roads of various classes (levels) within its scope of authority [1]: however, the same management standards are applied across these organizations, even though they have differently sized budgets that vary according to their management lengths and road classes. Although the actual level of management (surface condition) inevitably varies according to the size of the budget, each managing organization operates in a similar form regardless of the presence or absence of standards (condition indexes) for road management. However, there are limits to the reliability and assessment capabilities of such an approach.  
To overcome these limitations and manage pavements in a systematic manner, a pavement management system (PMS) can be used. Presently, PMSs are being used on some high-level roads (expressways, national highways, special/metropolitan roads, etc.) in most large-scale organizations. South Korea's main road management organizations (Ministry of Land, Infrastructure, and Transport and Korea Expressway Corporation) have been using PMSs to systematically manage pavements since 1990. To allow policy makers and road managers to ascertain pavement conditions at a network level and decide upon maintenance construction methods, the highway pavement condition index (HPCI) is used for expressways, whereas the national highway pavement condition index (NHPCI) is used for national highways. Additionally, South Korea developed its own indexes (Seoul Pavement Index or SPI, Busan Pavement Condition Index or BPCI, etc.), which are used in major special/metropolitan cities. Since 2020, a \"Basic Law on Sustainable InfrastructureManagement\" has been in effect to systematically maintain and improve the performance of major national infrastructure, which has expanded the importance and necessity of PMSs. As such, comprehensive inspections of all expressways and national highways have been performed each year since 2021 [2], and preparations are being made to construct systems that will be used to perform systematic maintenance at organizations that currently manage lower-level roads, such as local roads and city roads.  
However, even though indexes, such as HPCI and NHPCI have been developed and are used in PMSs, their corresponding approaches were designed to find condition indexes within a normal range based on managing roads with long lengths of several thousand kilometers or more (network level). As such, these indexes may have limitations in reflecting and managing regional characteristics (traffic environment, traffic volume, climate, etc.) for organizations that manage roads with shorter lengths, such as local roads, which are the typical focus of these organizations.  
In one of these regions, Jeju Island, the pavement rate is 99%, second only to that of the capital area of Seoul, whereas the road length is long (2076 km-lane, as of 2021), with the main roads consisting of local roads. Furthermore, Jeju has the geographical characteristics of an island, with sea on four sides, rather than those of an inland area, and as South Korea's main tourism region, its traffic volume is increasing rapidly each year because of continuous social and cultural development. As such, there is an increasing need for a system that can systematically manage pavements in the area [3].  
Therefore, this study commences with the development of a performance index that reflects the special properties, such as distress distribution, of asphalt pavements, which constitute most of the pavements in Jeju Island. Subsequently, this study proposes an easier process that can be used in pavement management systems for the selection of repair sections, thereby providing systematic management and ensuring appropriate pavement condition levels.