Reverse Curve Illustration

Enter the two radii and intersection angles. Use the intermediate tangent input when the two opposite curves are separated by a straight tangent section.

Inputs

R1 radius (m)

R2 radius (m)

I1 angle (degrees)

I2 angle (degrees)

Intermediate tangent (m)

First curve direction

Set intermediate tangent to 0 for a direct reverse curve. The illustration scales automatically; it is meant for visualizing layout and labels.

Illustration

First arc--

Intermediate tangent--

Second arc--