Question:
The point where the road alignment changes from a tangent to a curve is known as ___________.
The point where the road alignment changes from a tangent to a curve is known as ___________.
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Remember the road alignment transition points: PI (intersection), PC (start of curve), PT (end of curve).
Updated On: Feb 4, 2026
- Point of deflection
- Point of intersection
- Point of curve
- Point of tangency
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The Correct Option is C
Solution and Explanation
In highway geometry, the transition from a straight path (tangent) to a circular curve is marked by specific points:
- Point of Intersection (PI): Where two tangents meet.
- Point of Curve (PC): Where the curve begins (tangent ends and curve starts).
- Point of Tangency (PT): Where the curve ends and tangent resumes.
Therefore, the point where the road alignment changes from a tangent to a curve is called the Point of Curve (PC).
Hence, the correct answer is (C).
- Point of Intersection (PI): Where two tangents meet.
- Point of Curve (PC): Where the curve begins (tangent ends and curve starts).
- Point of Tangency (PT): Where the curve ends and tangent resumes.
Therefore, the point where the road alignment changes from a tangent to a curve is called the Point of Curve (PC).
Hence, the correct answer is (C).
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