Highway Engineering Multiple Choice Questions on “Design of Traffic Intersections”.
1. Which of the following is not an intersection at grade?
a) Un-channelized
b) Channelized
c) Rotary
d) Different level intersections
Answer: d
Clarification: The intersection at grade include un channelized, channelized and rotary intersections, the different level intersections are used for over pass and under pass.
2. An intersection that is provided for different levels of road is called __________
a) Intersection at grade
b) Grade separated intersections
c) Channelized intersection
d) Rotary intersection
Answer: b
Clarification: An intersection that is provided for different levels of road is called grade separated intersection, thus eliminating the crossing manoeuvre.
3. If the velocity of a vehicle is 60kmph and the other vehicle velocity is 20kmph, then the relative velocity is?
a) 80kmph
b) 40kmph
c) 20kmph
d) 60kmph
Answer: b
Clarification: The relative velocity is the difference of the velocities moving in same direction and sum of the velocities of vehicle moving in opposite direction.
4. If the angle of merging is low, then the relative speed will be __________
a) Low
b) High
c) Medium
d) Depends on width of pavement
Answer: a
Clarification: If the angle of merging is small, then the relative velocity will be low and impact will be low.
5. If an additional pavement is provided for lane change, then that intersection is called __________
a) Tee intersection
b) Rotary intersection
c) Flared intersection
d) Skewed intersection
Answer: c
Clarification: If an additional pavement is provided for lane change, then that intersection is called as flared intersection, it is provided in very crowded areas.
6. Which of the following is not a requirement for the intersection at grade?
a) Area of conflict should be large
b) Adequate visibility
c) Avoiding sudden change of path
d) Sufficient radius should be provided
Answer: a
Clarification: The intersection at grade requirements do not include large conflict area, it says the area of conflict should be as less as possible.
7. The most complex type of intersections for traffic operation is __________
a) Un-channelized
b) Channelized
c) Rotary
d) Grade separated
Answer: a
Clarification: The channelized intersections are the most complex type of intersections for traffic operation, but they are very easy to construct.
8. The procedure of adopting medians and traffic island in an un-channelized intersection is called __________
a) Dividing
b) Crossing
c) Channelizing
d) Designing
Answer: c
Clarification: The procedure of adopting medians and traffic island in an un-channelized intersection is called as channelizing of the intersection.
9. In India the design velocity at rotary is considered as __________
a) 30kmph
b) 40kmph
c) 50kmph
d) 60kmph
Answer: b
Clarification: In India, usually there is no limit to approach the rotary but for safety it is considered as 40kmph for design purposes.
10. If the coefficient of friction is 0.43, and the design velocity is 40kmph then the radius of curve is?
a) 20m
b) 25m
c) 28m
d) 30m