## 3 Results
### Practical Application of the Methodology at Rail Crossing P5567  
The mentioned methodological procedure must be practically applied to a specific rail crossing. A rail crossing P5567 in the southern part of the Czech Republic on the Ceske Budejovice-Horni Dvoriste railway line was chosen for both objective and subjective reasons. Crossing no. P5567 is a rail crossing equipped with a security device with lights and without railway barriers. It is situated on the 95 th km of railway line no. 196 from Ceske Budejovice to Horni Dvoriste. As well as the previous rail crossing, it is located between Velesin mesto railway stop and Velesin railway station. The rail crossing consists of the crossing of a single-track line with Road No. III/15536. The rail crossing is shown in Figure 7. The basic figures for rail crossings are in Table 5 [40].  
\begin{table}
\begin{tabular}{c c c c c} \hline \hline \multicolumn{2}{c}{**Speed of the Rail Vehicle**} & \multicolumn{3}{c}{**Surface Adhesion**} \\ \hline \multirow{2}{*}{**km/h**} & \multirow{2}{*}{**m/s**} & **Dry** & **Wet** & **Slippery** \\ \cline{3-5}  & & **0.15** & **0.10** & **0.05** \\ \hline
10 & 2.78 & 8.83 & 10.16 & 14.12 \\
20 & 5.56 & 22.97 & 28.24 & 44.01 \\
30 & 8.34 & 42.35 & 54.19 & 89.65 \\
40 & 11.12 & 66.99 & 88.01 & 151.05 \\
50 & 13.89 & 96.76 & 129.56 & 227.91 \\
60 & 16.67 & 131.89 & 179.11 & 320.76 \\
80 & 22.23 & 217.89 & 301.86 & 553.75 \\ \hline \hline \end{tabular}
\end{table}
Table 4: Stopping distances of rail vehicles.  
\begin{table}
\begin{tabular}{c c c c c c c c} \hline \hline \multicolumn{1}{c}{\(\mathbf{a_{z}}\) (m.s\({}^{-2}\))} & \(\mathbf{a_{b}}\) (m.s\({}^{-2}\)) & \(\mathbf{v_{z}}\) (m.s\({}^{-1}\)) & \(\mathbf{t_{z}}\) (s) & \(\mathbf{S_{r}}\) (m) & \(\mathbf{S_{b}}\) (m) & \(\mathbf{S_{z}}\) (m) & \(\mathbf{S}\) (m) \\ \hline
1.47 & 0.74 & 27.41 & 18.63 & 55.56 & 13.80 & 255.32 & 324.68 \\ \hline \end{tabular}
\end{table}
Table 3: Calculations.  
Figure 7: Rail crossing No. P5567.  
Approaching the crossing in the direction of Skridla, drivers are informed about the arrival at the crossing by the A31a signal board and A30a \"rail crossing without barriers\" road sign, which informs drivers about the type of the rail crossing. Drivers can thereby see the rail crossing from this distance. The A31b signal board is located 160 m away from the crossing and the A31c signal board is 80 m away from the crossing, the distance from which drivers can clearly see the crossing. In the direction of Velesin, drivers are informed about the approaching crossing by the A31a signal board and the A30 \"rail crossing without barriers\" road sign, which also informs drivers about the type of rail crossing. A31b and A31c signal boards follow upon further approaching. Figure 7 also shows that neither from 80 m can a driver clearly see the rail crossing. As a matter of fact, a safe view of the warning sign is not possible as far as 33 m. For that reason, the warning sign is located not only on the right but also on the left side of the road [3; 41].  
Table 6 shows that the line speed of rail vehicles at the rail crossing point is determined to be 80 km/h. The width of the rail crossing and the distance of warning signs is highlighted green in the table in order to comply with the statutory requirements. Requirements for other parameters are not clearly set by the law. The possibility of avoiding collisions by the car driver can be assessed in regard to perspective ratios and figures in Table 4, which determine the stopping distance of the rail vehicle at different speeds and the condition of the rail surface. Comparing figures from the table and specific perspective ratios, we can identify whether the car driver is able to stop the rail vehicle before the crossing [3].