Figure 7
It shows the distance headway measurement method. In Eqs. 23–25, th (s) is the time headway between the front vehicle i and the following vehicle i + 1; \({T}_{h}^{i+1}\) (s) is the clock time when front vehicle i + 1 (position of the yellow line) passes through the red line in this figure; \({T}_{h}^{i}\) (s) is the clock time when front vehicle i (position of the green line) passes through the red line; Vi+1 (km/h) is the speed of the following vehicle; and Sm (m) is the distance headway between vehicles i and i + 1.
