# A Digital Twin for Intelligent Transportation Systems in Interurban Scenarios
## 6 Performance Evaluation Results
### Evaluation of Simulation Time  
This section studies the simulation time of the digital twin in a high-performance computer with a 12 th Gen Intel(r) Core(tm) i9-12900 KS processor and 3.418 GHz CPU, \begin{table}
\begin{tabular}{c c c c c c c} \hline \hline
**Combination** & \begin{tabular}{c} **Weight** \\ **Time** \\ \end{tabular} & **Weight CO** & \begin{tabular}{c} **Weight** \\ **NOx** \\ \end{tabular} & \begin{tabular}{c} **Weight** \\ **PM2.5** \\ \end{tabular} & **Error** & \
\begin{tabular}{c} **Error** \\ **Percentage** \\ \end{tabular} &
\begin{tabular}{c} **Tolerant** \\ **Error** \\ \end{tabular} \\ \hline
1 & 0.25 & 0.25 & 0.25 & 0.25 & 5/64 & 7.81\% & 1.56\% \\
2 & 0.3 & 0.25 & 0.25 & 0.2 & 2/64 & 3.13\% & 1.56\% \\
3 & 0.2 & 0.2 & 0.4 & 0.2 & 8/64 & 12.50\% & 1.56\% \\
4 & 0.25 & 0.25 & 0.35 & 0.15 & 3/64 & 4.69\% & 0.00\% \\
5 & 0.3 & 0.25 & 0.25 & 0.2 & 2/64 & 3.13\% & 1.56\% \\
6 & 0.3 & 0.2 & 0.3 & 0.2 & 6/64 & 9.38\% & 1.56\% \\
7 & 0.3 & 0.3 & 0.2 & 0.2 & 3/64 & 4.69\% & 1.56\% \\
8 & 0.3 & 0.2 & 0.2 & 0.3 & 3/64 & 4.69\% & 1.56\% \\
9 & 0.2 & 0.3 & 0.3 & 0.2 & 11/64 & 17.19\% & 4.69\% \\
10 & 0.25 & 0.3 & 0.25 & 0.2 & 8/64 & 12.50\% & 3.13\% \\ \hline \hline \end{tabular}
\end{table} 
Table 4: Pollution decision errors when changing the speed of both the incident and previous sections. \begin{table}
\begin{tabular}{c c c c c c c} \hline \hline
**Combination** & \begin{tabular}{c} **Weight** \\ **Intensity** \\ \end{tabular} & **Weight Time** & \
\begin{tabular}{c} **Weight** \\ **Speed-Dev-Ratio** \\ \end{tabular} & **Error** &
\begin{tabular}{c} **Error** \\ **Percentage** \\ \end{tabular} & **Tolerant Error** \\ \hline
1 & 1 & 0 & 0 & 29/90 & 32\% & 11\% \\
2 & 0 & 1 & 0 & 37/90 & 41\% & 12\% \\
3 & 0 & 0 & 1 & 62/90 & 69\% & 37\% \\
4 & 4/12 & 4/12 & 4/12 & 23/90 & 26\% & 4\% \\
5 & 3/12 & 3/12 & 6/12 & 45/90 & 50\% & 28\% \\
6 & 5/12 & 5/12 & 2/12 & 13/90 & 14\% & 4\% \\
7 & 3/12 & 6/12 & 3/12 & 13/90 & 14\% & 3\% \\
8 & 4/12 & 5/12 & 3/12 & 13/90 & 14\% & 3\% \\
9 & 3.5/12 & 5/12 & 3.5/12 & 15/90 & 17\% & 3\% \\
10 & 4.5/12 & 5/12 & 2.5/12 & 13/90 & 14\% & 3\% \\ \hline \hline \end{tabular}
\end{table} 
Table 2: Congestion decision errors when changing the speed of both the incident and previous sections. \begin{table}
\begin{tabular}{c c c c c c c} \hline \hline
**Combination** & \begin{tabular}{c} **Weight** \\ **Time** \\ \end{tabular} & **Weight CO** & \begin{tabular}{c} **Weight** \\ **NOx** \\ \end{tabular} & \
\begin{tabular}{c} **Weight** \\ **PM2.5** \\ \end{tabular} & **Error** &
\begin{tabular}{c} **Error** \\ **Percentage** \\ \end{tabular} & **Tolerant Error** \\ \hline
1 & 0.25 & 0.25 & 0.25 & 0.25 & 1/64 & 1.56\% & 0.00\% \\
2 & 0.3 & 0.25 & 0.25 & 0.2 & 6/64 & 9.38\% & 3.13\% \\
3 & 0.2 & 0.2 & 0.4 & 0.2 & 4/64 & 6.25\% & 1.56\% \\
4 & 0.25 & 0.25 & 0.35 & 0.15 & 1/64 & 1.56\% & 0.00\% \\
5 & 0.3 & 0.25 & 0.25 & 0.2 & 6/64 & 9.38\% & 3.13\% \\
6 & 0.3 & 0.2 & 0.3 & 0.2 & 4/64 & 6.25\% & 3.13\% \\
7 & 0.3 & 0.3 & 0.2 & 0.2 & 6/64 & 9.38\% & 3.13\% \\
8 & 0.3 & 0.2 & 0.2 & 0.3 & 4/64 & 6.25\% & 0.00\% \\
9 & 0.2 & 0.3 & 0.3 & 0.2 & 7/64 & 10.94\% & 4.69\% \\
10 & 0.25 & 0.3 & 0.25 & 0.2 & 3/64 & 4.69\% & 1.56\% \\ \hline \hline \end{tabular}
\end{table} 
Table 3: Pollution decision errors when changing the speed of the incident section. 24 logical processors, 64 GB of RAM, and an NVIDIA GeForce RTX 3090 Ti GPU. The test performed consists of executing the DT comparing the default simulation and five strategies, totaling 60 simulations (each simulation is performed 10 times with different seeds), in addition to setting up the scenario, extracting the results, and comparing them. More specifically, the DT simulates, following a sequential order, incident A and strategies involving changing the speed limit of the incident section (110, 100, 90, 80, and 70 km/h). The total time to reach a decision on the traffic strategy to apply is 9 min 10 s. However, executing a single simulation only takes 8.5 s, but it is executed 60 times.