Module 6 : Traffic Intersection Control
Lecture 32 : Traffic Rotary
1 2 3 4 5 6 7 8
 

Traffic operations in a rotary

As noted earlier, the traffic operations at a rotary are three; diverging, merging and weaving. All the other conflicts are converted into these three less severe conflicts.
  1. Diverging: It is a traffic operation when the vehicles moving in one direction is separated into different streams according to their destinations.
  2. Merging: Merging is the opposite of diverging. Merging is referred to as the process of joining the traffic coming from different approaches and going to a common destination into a single stream.
  3. Weaving:  Weaving is the combined movement of both merging and diverging movements in the same direction.
These movements are shown in figure 1.
Figure 1: Traffic operations in a rotary
\begin{figure} \centerline{\epsfig{file=t42-rotary-movements.eps,width=8cm}} \end{figure}
It can be observed that movements from each direction split into three; left, straight, and right turn.