Table 4 Summary of dependent variables
Variables | Description |
|---|---|
Average speed (km/h) | It reflects the overall effectiveness of the design alternative |
The relative speed difference | It indicate the degree of the speed change |
The standard deviation (SD) of acceleration | It is used to evaluate speed as an indirect evaluation indicator, which depicts the stability of speed reduction through the school zone |
The 85th percentile speed (km/h) of all subjects | It is a speed at or below which 85Â % of drivers choose to drive, and highly correlated with the speed limit in this area |