Use of an Improved Car-Following Model to Explain the Influence of Traffic Composition on Saturation Headway at Signalized Intersections

Table 3

The distribution of measured headways in different scenarios of vehicle composition.

Proportion of buses	0%	0–10%	10–20%	20–30%	30–40%	40–50%
Average saturation headway (s)	2.20	2.47	2.57	2.78	2.92	3.22