What is the term for the location on a horizontal alignment representing the first point of tangency of a horizontal curve?

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Multiple Choice

What is the term for the location on a horizontal alignment representing the first point of tangency of a horizontal curve?

Explanation:
The first point of tangency along a horizontal alignment, where the straight path transitions into the curve, is the Point of Curvature. This point marks where the curved section begins and the tangent to the curve matches the preceding straight tangent. The end of the curve is a different feature (the Point of Tangency), while the Point of Intersection is a geometric construct of the extended tangents and not a point on the actual curve. Railing is unrelated. Thus, the location described is the Point of Curvature.

The first point of tangency along a horizontal alignment, where the straight path transitions into the curve, is the Point of Curvature. This point marks where the curved section begins and the tangent to the curve matches the preceding straight tangent. The end of the curve is a different feature (the Point of Tangency), while the Point of Intersection is a geometric construct of the extended tangents and not a point on the actual curve. Railing is unrelated. Thus, the location described is the Point of Curvature.

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