FAQ

For curve definition, both radius and end bearing need to be entered. What type of curve is being defined by this?

Extended Question: For circular curve, either radius or end bearing would be sufficient. Similar applies to transition curve. What curve is being defined and where is the radius measured? Related form: Bridge layout line - horizontal layout data

Answer: An arc of specified constant specified is centered within the specified station range. If this arc length is less than the difference in stations, transitions are created of where the curvature varies linearly from 1/R at each end of the arc to zero at the corresponding station end point.