From the above figure, it is evident that there is a difference between the two samples. Furthermore, we observe that the number of accidents is greater after the Vision Zero adoption than before the adoption for the same cumulative fraction. This seems to indicate that not only is there a difference between the rate of daily accidents before and after Vision Zero adoption, but there is also an increase in the rate of daily accidents.
To analyze if the point of greatest change in the mean of the daily rate of accidents coincided with the Vision Zero adoption, the following figure is plotted.