View and edit superelevation data for each curve or enter data manually.
The information that is displayed in the Superelevation Tabular Editor varies depending on the type of roadway.
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Add A Superelevation Critical Station
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Delete Critical Station or Superelevation Region
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Import Superelevation Data From File
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Export Superelevation Data
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Undo
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Redo
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Clear All Superelevation Data
- Superelevation Curve
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This column displays the Transition In and Transition Out Regions for the curves in the alignment.
Expand each region to view or edit the superelevation parameters.
To manually add a new critical station, right-click a region or a parameter
Add Station.- Begin Normal Crown
- Begin Normal Shoulder
- Begin Full Super
- End Full Super
- End Normal Crown
- End Normal Shoulder
- Level Crown
- Low Shoulder Match
- Reverse Crown
- Shoulder Breakover
- Begin Shoulder Rollover
- End Shoulder Rollover
- Start Station and End Station
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Displays the start station and end station. When you edit these fields for a Runout or Runoff region or a critical station, the distance field and rate of change field are updated. If the station you edit is the same as the Start Station or End Station of a Runout or Runoff region, that station value is also updated and the transition formula (% into tangent or spiral) is not maintained.
- Length
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Displays the length for the Transition In Region and the Transition Out Region. Specifies the length for the Runout and Runoff. Editing the length value changes the station values and the rate of change field. The station value(s) update with respect to the beginning or end of curve. The station value associated with curve start and end changes when you change the distance values to maintain the percentage of transition shift into the specified curve.
For example: without changing any of the other distance values.
- 30% of transition length should be into the curve
- Start Station of Runoff is 1+00
- End Station is 2+00
- Beginning of Curve station is 1+70
and then change the Runoff value to 150 feet, you get the following results:
- 30% of transition length should be into the curve
- Start Station of Runoff becomes 0+65
- End Station of Runoff becomes 2+15(to maintain the transition length at 30% into the curve)
- Beginning of Curve station is 1+70
Any other stations or regions associated with the superelevation curve shift by the same amount.
- Overlap
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Displays the
warning symbol for areas on the alignment where there is overlap. Click the
, and a task dialog box is displayed showing the options to resolve overlap. The conditions are either a reverse curve situation or a compound curve situation. To automatically resolve overlap you can select the option on the Attainment page in the Superelevation wizard. However, there can be situations where overlap is created by manually editing or by importing superelevation data. - Rate of Change
- Curve Smoothing
- All Lane Columns
and browse to the location of the CSV file you want to import.