Practical determination of gap-acceptance parameters on roundabouts
Roundabouts have various benefits in terms of safety and capacity issues that are worldwide recognized. Capacity analysis, which is very often key factor in the decision-making process between different types of intersection, can be performed with the empirical regression or gap-acceptance based models. The second model is more suitable for different locations because it depends only on two parameters: critical gap and follow-up headway. This paper presents practical determination of these two parameters on single and two-lane roundabouts in Bosnia and Herzegovina. Study like this was made for the first time in Bosnia and Herzegovina and have high importance for accurate capacity evaluation in local conditions.