# To add superelevation and widening

Superelevation and widening values are applied at the start station, and values are then interpolated linearly (applied on a pro rata basis) from that point to the station where the next superelevation and widening values are applied.

To add superelevation and widening values to the selected road definition:

1. Tap Superelevation & widening.
2. Tap Add.
3. Enter the Start station.

4. In the Pivot field, select the position about which the template rotates. If you select:

   - Pivot left, the pivot position is the maximum offset, left of the alignment, of the last template string with superelevation applied.
   - Pivot crown, the pivot position is at the alignment.
   - Pivot right, the pivot position is the maximum offset, right of the alignment, of the last template string with superelevation applied.

   When the pivot position is set to Pivot left or Pivot right, the algebraic difference in cross slope between the first template string with superelevation applied and the superelevation value is used to calculate the superelevation for all other template strings with superelevation applied.

5. In the Left super and Right super fields, enter superelevation values for the left and right sides of the horizontal alignment.

   To change the way a superelevation value is expressed, tap Options and change the Grade field as required.

6. In the Left widening and Right widening fields, enter the widening values to be applied. Widening is expressed as a positive value.

   These values are applied to each string in the template that has the Widening check box selected.

7. Tap Store.
8. Continue adding records as required.

9. When you are done, tap Close.

10. Tap Accept.
11. Enter the other road components or tap Store to store the road definition.