## 4 Empirical Results  
The results of the relative importance analysis of autonomous vehicle security-level check areas and detailed sub-check items using AHP are shown in Table 2.  
Through this, we can check the weighted results of the security-check items of the second layer, named the upper area, and the third layer, named the lower area. In addition, we can identify the relative priority of the overall weight of each sub-check item by synthesizing the upper area and the lower area. Looking at the detailed results of the empirical study, the results of the pairwise comparison between the upper areas showed that the importance results of the administrative, technical, and physical checks were 47.7%, 45.2%, and 7.1%,  
\begin{table}
\begin{tabular}{c c c c c c c} \hline \hline \multicolumn{2}{c}{**Second Layer**} & \multicolumn{4}{c}{**Third Layer**} & \multirow{2}{*}{ \begin{tabular}{c} **Final Relative** \\ **Importance of** \\ **Second Layer** \\ \end{tabular}  } \\ \cline{3-6} \multicolumn{2}{c}{**Items**} & \begin{tabular}{c} **Relative** \\ **Importance of** \\ **Second Layer** \\ \end{tabular}  & \multicolumn{1}{c}{ \begin{tabular}{c} **Checklist Items** \\ **Theodist Layer** \\ \end{tabular}  } & \begin{tabular}{c} **Relative** \\ **Importance of** \\ **Third Layer** \\ \end{tabular}  & \begin{tabular}{c} **Priorities** \\ **of Third** \\ **Layer** \\ \end{tabular}  & \begin{tabular}{c} **Final Relative** \\ **Importance** \\ \end{tabular}  & \ \begin{tabular}{c} **Final** \\ **Priorities** \\ **Priorities** \\ \end{tabular}  \\ \hline \multirow{4}{*}{ \begin{tabular}{c} Administrative \\ level check \\ \end{tabular}  } & \multirow{4}{*}{0.477} & \multicolumn{4}{c}{Establishment and implementation of Cyber Security Management System Cybersecurity risk assessment of 0.2040} & \multirow{4}{*}{0.5530} & \multirow{4}{*}{1} & \multirow{4}{*}{0.2638} & \multirow{4}{*}{1} \\  & & & & & & \\ \cline{1-1} \cline{respectively. Therefore, it was confirmed that the administrative security-level check was the most important in the pairwise comparison between the upper areas. Therefore, in the pairwise comparison between the upper areas, it was confirmed that the administrative security-level check was the most important. This result is because the overall cybersecurity management system, including the security organization structure that can implement the strengthening of autonomous vehicle security, CSMS implementation, management system supervision, etc., and the security risk management that performs asset identification, risk assessment, and protection-measure establishment, should be structured as the baseline in the organization. In addition, the technical security-check area cannot be effective in the cybersecurity management system with a weak foundation. In the lower area, the results of the administrative security-level check showed that the establishment and implementation of a cybersecurity management system had the highest weight at 55.3%, followed by risk assessment at 20.4%, autonomous vehicle concept/development/verification at 10%, and security in mass production and operation at 8.9%. In particular, the reason why the establishment and implementation of a cybersecurity management system had the highest weight is because it establishes a security management system structure such as CSMS implementation and management system supervision throughout the autonomous vehicle's life cycle. As a result of the priority analysis of detailed areas in terms of technical security-level checks, encryption showed the highest figure at 51.5%, followed by authentication and authority management at 17%, vehicle-security operation management at 13.2%, access control at 9.3%, and development security at 5.4%. In particular, the reason why encryption is considered relatively important is that it can respond to illegal theft and authentication bypass by encrypting transmitted and received packets, and it also makes it impossible for unauthorized persons to identify information by encrypting important data.