250+ TOP MCQs on Capacity of Rotary and Answers

Traffic Engineering Multiple Choice Questions on “Capacity of Rotary”.

1. Which of the following is a limitation of a rotary?
a) Rotaries are self-governing
b) Rotaries require a large area
c) Eliminates severe conflicts
d) Accidents are less
Clarification: Rotaries require large area hence they are a costly affair in urban areas. The advantages of rotary is that they are self-governing, eliminates severe conflicts and accidents.

2. How many traffic operations are there in a rotary?
a) 1
b) 2
c) 3
d) 4
Clarification: There are 3 traffic operations in a rotary and they are diverging, merging and weaving. Diverging is a traffic operation when the vehicles moving in one direction parts into different directions according to their destinations. Merging is the opposite of diverging and weaving is a combination of both.

3. The capacity of rotary is found out by the capacity of each weaving section.
a) True
b) False
Clarification: The statement, “The capacity of rotary is found out by the capacity of each weaving section” is true. The minimum of the capacity of all the weaving section is the capacity of rotary.

4. Which one of the following is the empirical formula to find the capacity of the weaving section?
a) Qw = (280w(1+e/w)(1-p/3))/(1+w/l)
b) Qw = (280w(1+e/w)(1-p/3))/(1-w/l)
c) Qw = (280w(1-e/w)(1-p/3))/(1+w/l)
d) Qw = (280w(1+e/w)(1*p/3))/(1+w/l)
Clarification: Qw = (280w(1+e/w)(1-p/3))/(1+w/l) is the empirical formula to find the capacity of the weaving section. Here, Qw = capacity of weaving section, w = weaving width, l = length of weaving, p = proportion of weaving traffic to the non-weaving traffic.

5. The capacity formula is valid only if the weaving width is between _______
a) 6 and 18 metres
b) 1 and 10 metres
c) 3 and 9 metres
d) 4 and 14 metres