This tutorial demonstrates how to create and modify alignments.
You begin creating an alignment by marking the location of tangents and points of intersection for a road centerline alignment. During the creation process, curves between the tangents can be created automatically, or added later. To accommodate high-speed travel, spirals and superelevation can be added to the curves. You can enter numeric parameter values for lines, curves, and spirals in the Alignment Entities table.
If your alignment design must meet minimum standards, you can apply design criteria to an alignment either before or after it is created. This tutorial demonstrates basic alignment creation tasks. For information on applying design criteria to an alignment, see the Designing an Alignment Using Local Standards tutorial.
