Figure 5
A histogram displays the distribution of speed values. The x-axis represents speed values ranging from 0 to 70, while the y-axis represents frequency, ranging from 0 to 3500. The histogram consists of vertical bars, each representing a bin of speed values. The data forms a bell-shaped distribution with a peak around the speed value of 35. A red line overlays the histogram, indicating a fitted curve. The mean speed value is 34.24, the median is 35.11, the standard deviation is 11.99, and the total number of data points is 55508. All values are approximated.Response surface of the gplearn formula trained on two features: average speed as a function of block-section length (x2) and share of transit trains (x1)