Which of the following parameters are required for the design of a transition curve for a highway system?
(A) Rate of change of grade
(B) Rate of change of radial acceleration
(C) Rate of change of super elevation
(D) Rate of change of curvature
Choose the most appropriate answer from the options given below:
Which of the following parameters are required for the design of a transition curve for a highway system?
(A) Rate of change of grade
(B) Rate of change of radial acceleration
(C) Rate of change of super elevation
(D) Rate of change of curvature
Choose the most appropriate answer from the options given below:
Show Hint
- A, B and C only
- A, B and D only
- A, C and D only
- B, C and D only
The Correct Option is D
Solution and Explanation
Step 1: Transition curve design criteria.
Transition curves are introduced in highways to provide gradual change in curvature and superelevation. The key parameters are:
- Rate of change of radial acceleration.
- Rate of change of superelevation.
- Rate of change of curvature.
Step 2: Eliminate unnecessary parameter.
Rate of change of grade (longitudinal slope) is not a governing factor in transition curve design.
Step 3: Conclusion.
Hence, the required parameters are (B), (C), and (D). Therefore, the correct answer is (D).
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