The location on a horizontal alignment which represents the last point of tangency of a specific horizontal curve.

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Multiple Choice

The location on a horizontal alignment which represents the last point of tangency of a specific horizontal curve.

Explanation:
In a horizontal alignment, a curve transitions between two straight tangents. The curve starts where it begins to bend—the Point of Curvature—and ends where it finishes bending and becomes tangent to the next straight segment—the Point of Tangency. So the last point where the curve remains tangent to the straight path is the Point of Tangency. This is precisely the end of the curved portion and marks the transition back to a straight alignment. The other terms refer to different aspects: the start of the curve, the point where curvature changes sign, or a vertical-geometry intersection, none of which denote the end of a horizontal curve.

In a horizontal alignment, a curve transitions between two straight tangents. The curve starts where it begins to bend—the Point of Curvature—and ends where it finishes bending and becomes tangent to the next straight segment—the Point of Tangency. So the last point where the curve remains tangent to the straight path is the Point of Tangency. This is precisely the end of the curved portion and marks the transition back to a straight alignment. The other terms refer to different aspects: the start of the curve, the point where curvature changes sign, or a vertical-geometry intersection, none of which denote the end of a horizontal curve.

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