## Appendix A Tables with Explanation for Data Processing  
As described in Section 2.1. we gathered all the test runs per test scenarios from the existing regulations, protocols, and standards, resulting in a list comprising more than 1000 test runs. Table A1 summarizes the parameters that are applicable for two or more regulations, standards, or protocols and provides instruction on how the different test runs should be processed. The column 'Numerical representation' is used for building the relevant vectorized database for further selection of test runs defined in Section 2.4. \begin{table}
\begin{tabular}{c c c c} \hline \hline
**Used** & **Input** & & \\
**Parameter 1** & **Requirements** & **Comment** & **Numerical Representation** \\ \hline  & & Only exact values or ‘N/A’ can be given. If & \\  & & ranges or values with \(<\) \(>\) are given, please & Exact value divided by 100. \\ VUT speed & Exact values in km/h & select one of the reasonable boundaries or & In case of speed being \\ [km/h] & ‘N/A’ & the middle value. The exact requirement & higher than 130 km/h, \\  & & can be provided in the related & value ‘1’ should be used. \\  & & comments column. & \\ \hline  & ‘Forward’ & Only ‘Forward’, ‘Rearward’, ‘Farside turn’ & ‘Forward’—’1’ \\  & ‘Rearward’ & (left turn according to LHD traffic), & ‘Farside turn’—’0.5’ \\ VUT direction & ‘Farside turn’ & ‘Nearside turn’ (right turn), and ‘Stationary’ & ‘Nearside turn’—’0.5’ \\  & ‘Stationary’ & can be given. If no target is used, ‘N/A’ & ‘Stationary’—’0’ \\  & ‘N/A’ & should be entered. & ‘N/A’—’0’ \\ \hline  & & & \\ Target speed & Exact values in km/h & Only exact values, or N/A if no target is & Exact value divided by 100. \\  & ‘N/A’ & used, and TBD if the speed cannot be & In case of speed being \\  & ‘TBD’ & exactly determined. & higher than 130 km/h, \\  & & & value 1 should be used. \\ \hline  & & & \\  & ‘EBT’ & ‘EMT’ & \\  & ‘EMT’ & ‘EPTa’ & \\  & ‘EPTa’ & ‘EPTa’ & \\  & ‘EPTc’ & ‘EPTc’ & \\  & ‘GVT’ & ‘GVT’ & \\  & ‘GV-\&EMT’ & \\  & ‘N/A’ & targets are needed & \\  & & \multicolumn{2}{c}{‘N/A’—no target} \\ \hline  & ‘Crossing’ & Only ‘Crossing’ for perpendicular moving, & ‘Crossing’—’0.5’ \\ Target & ‘Moving parallel’ & ‘Moving parallel’ & ‘Stationary’, or ‘N/A’ & ‘Moving parallel’—’1’ \\ movement & ‘Stationary’ & can be used. The exact requirement can be & ‘Stationary’—’0’ \\  & ‘N/A’ & provided in the related comments column. & ‘N/A’—’0’ \\ \hline  & ‘Opposite direction’ & Only ‘Opposite direction’, ‘Same direction’ & ‘Opposite direction’—’–1’ \\  & ‘Same direction’ & ‘Farside’, ‘Nearside’, and N/A can be used. & ‘Same direction’—’–1’ \\ Target direction & ‘Farside’ & The exact requirement can be provided in & ‘Farside’—’0.5’ \\  & ‘Nearside’ & the related comments column. & ‘Nearside’—’0.5’ \\  & ‘N/A’ & \\ \hline  & & & \\ Overlap & Exact \% values & Only exact values from —100\% to 100\% & \\  & ‘N/A’ & (usually with 25\% steps) or ‘N/A’ if no & Exact value from \% (i.e., 100\% = 1) \\ \hline  & & & \\ \multirow{2}{*}{Obstruction} & ‘Yes’ & If the targets are used during the scenario in & \\  & ‘No’ & some specific cases, the targets are covered & ‘Yes’—’1’ \\  & ‘No’ & with other objects, like cars. In this case the & ‘No’—’0’ \\  & & scenarios are obstructed. & \\ \hline \hline \end{tabular}
\end{table} 
Table 1: Parameters used to process the test runs for the database with their numerical representation for similarity analysis if applicable. As described in Section 2.3, to ensure compatibility between the parameters used in the test scenario database and the responses given in the questionnaire, we identifiedparameters that can be used for both analyzing the relevant answers from the questionnaire and parameters from the test run database. Table A2 shows the defined 'Vector parameter' with the explanation of each parameter and also the rationale for the database of the test runs and for the questionnaire. For the latter, the relevant questions are also referenced, with their numbering corresponding to the numbering in Appendix B.