40.4.4. Width of the rotary

Try these first

1. 1.

   What is the recommended entry width for urban roads?

   Hint

   Refer to the section on width specifications.

2. 2.

   Explain why weaving width is important.

   Hint

   Think about traffic dynamics.

3. 3.

   What is the standard entry width for rural roads?

   • 6.5 m
   • 7 m
   • 5 m

   Hint

   Refer to the urban and rural comparison.

4. 4.

   True or False: Weaving width should be smaller than entry and exit widths.

   • True
   • False

   Hint

   Think about traffic dynamics when entering a rotary.

5. 5.

   A city plans to construct a rotary with an expected traffic volume of 3500 vehicles/hour. Determine the suitable entry and exit widths based on the guidelines discussed.

   Hint

   Consider the traffic volume and safety standard.

6. 6.

   Consider a rotary where the proportion of weaving traffic to non-weaving traffic is shown to be high. Discuss how this influences the design of widths.

   Hint

   Think about how these proportions affect traffic flow.