Use this vista to view and edit entities that are part of the solved alignment geometry.
Use the Alignment Entities window to navigate through all solved alignment entities. You can select an entity in the Alignment Entities window and then edit it in the Alignment Layout Parameters window. Attributes in the Alignment Entities window are automatically updated as you edit the alignment.
You can filter the display to show a selected range of entities along an alignment.
The Alignment Entities vista is like a spreadsheet. Each row represents an alignment entity and each column represents an attribute for that entity. You can resize, move, and copy columns.
The first column (No.) is always displayed. It does not move when you use the scroll bar.
This window remains open when you grip edit the alignment or enter another command. The window closes when you either delete the currently selected alignment, click the X button, or click 
on the Alignment Layout Toolbar.
- No.
-
Specifies the entity number in the order of selection. This variable changes as entities are selected and deselected.
A
warning symbol is displayed in this cell if the sub-entity violates the specified design criteria. - Number
-
Specifies the entity number in the order in which it appears along the alignment. This value changes as alignment entities ahead of it are created or deleted. This column cannot be hidden or deleted.
- Type
-
Specifies either line, curve, or spiral as the entity type.
- Tangency Constraint
-
Specifies how the entity is constrained by other entities: either Not Constrained (Fixed), Constrained By Previous (Floating), Constrained By Next (Floating), or Constrained On Both Sides (Free).
- Parameter Constraint Lock
-
Specifies whether the parameters associated with the Parameter Constraint property may be edited.
(Locked): Only the parameters permitted by the Parameter Constraint property are enabled for editing. 
(Unlocked): All parameters (with some exceptions) are enabled for editing.
If the Lock All Parameter Constraints option on the Constraint Editing Tab (Alignment Properties Dialog Box) is selected, then all entities will be set to locked.
- Parameter Constraint
-
Specifies the number of points in the constraint of the tangent.
If the entity was created by best fit, [...] appears to the right of the Best Fit entry. If the entity has been edited since it was created from best fit regression data,
appears. Click [...] to open the Regression Data vista and review the regression points and synchronize the entity to the regression data. - Length
-
Specifies the length of the entity.
A
warning symbol is displayed in this cell if the sub-entity length value is not greater than or equal to the value in the Minimum Length cell. - Radius
-
Specifies the radius of the curve.
A
warning symbol is displayed in this cell if the sub-entity radius value is not greater than or equal to the value in the Minimum Radius cell. - Direction
-
Specifies the direction of the entity.
- Start Station
-
Specifies the starting station for the entity.
- End Station
-
Specifies the ending station for the entity.
- Delta Angle
-
Specifies the angular difference in the direction of the incoming and out going tangents.
- Chord Length
-
Displays the chord length of the circular curve.
Specifies the distance along the line joining the beginning of the curve (PC) and the end of the curve (PT).
- Mid-Ordinate
-
Specifies the distance from the midpoint of the curve, perpendicular to the midpoint of the chord.
- External Tangent
-
Specifies the distance from the beginning of the curve (PC) to the PI or from the PI to the end of the curve (PT).
- External Secant
-
Specifies the radial difference from the PI to the midpoint of the curve.
- PI Included Angle
-
Specifies the included angle between the incoming and outgoing tangents of the curve.
- Greater than 180 Degrees
-
- Displays True if the curve angle is defined as greater than 180 degrees.
- Displays False if the curve angle is defined as less than 180 degrees.
- Start Point
-
Specifies the coordinates for the starting point of the entity.
- Direction At Through Point1
-
Specifies the XY coordinates of the first user-specified pass-through point.
- Direction At Through Point2
-
Specifies the XY coordinates of the second user-specified pass-through point.
- Center Point
-
Specifies the coordinate of the center point of a circular curve.
- Curve Group Index
-
Specifies the curve group description.
- Curve Group Sub-Entity Index
-
Specifies the curve group sub-entity description.
- End Point
-
Specifies the coordinates for the end point of the entity.
- PI Station
-
Specifies the station value of the PI by adding the PC to the PI tangent length to the station value at the beginning of the curve (PC).
- Pass Through Point1
-
Specifies the point coordinates for the first pass-through point of an alignment entity.
- Pass Through Point2
-
Specifies the point coordinates for the second pass-through point of an alignment entity.
- Pass Through Point3
-
Specifies the direction of the third user-specified pass-through point on a curve entity.
- Minimum Length
-
Specifies the minimum transition length defined in the design criteria file for the current design speed.
- Minimum Radius
-
Specifies the minimum radius value defined in the design criteria file for the current design speed.
- A
-
Specifies the A value.
- Bearing
-
Specifies the direction of the entity.
- Spiral Type
-
Specifies the spiral type.
- Incurve
-
Specifies whether the curve is incoming or outgoing.
- Compound
-
Displays True when a spiral has a curve at each end.
- Radius In
-
Specifies the incoming curve radius.
- Radius Out
-
Specifies the outgoing curve radius.
- Total X
-
Specifies the tangent distance between the beginning point of the incoming spiral (TS) and the endpoint of the spiral and beginning point of the circular curve.
- Total Y
-
Specifies the perpendicular offset distance between the beginning point of the circular curve (SC) and the incoming tangent.
- Short Tangent
-
Specifies the distance from the spiral point of the horizontal tangent intersection (SPI) to the end of the spiral (SPI).
- Long Tangent
-
Specifies the distance from the beginning of the spiral (TS) to the spiral point of horizontal tangent intersection (SPI).
- P
-
Specifies the offset distance from the incoming tangent to the beginning point (PC) of the shifted circular curve.
- K
-
Specifies the abscissa between the beginning point of the spiral (TS) and the beginning point of the shifted circular curve.
- Spiral Definition
-
Specifies the spiral definition.
- SPI Station
-
Specifies the station value of the SPI. Adds the tangential distance from the beginning of the Spiral (TS) to the SPI to the station value of the TS.
- SPI Northing
-
Specifies the XY coordinates of the spiral point of horizontal tangent intersection.
- SPI Easting
-
Specifies the XY coordinates of the spiral point of horizontal tangent intersection.
- SPI Included Angle
-
Specifies the angle representing the difference in direction of the incoming tangent and the outgoing tangent of the spiral.
- Degree of Curvature
-
Specifies the degree of curvature that was calculated for the curve. This value is directly related to the Radius value. It uses the same constraints, and if one changes, the other updates automatically.
- Radial Point Northing
-
Specifies the coordinates of the spiral northing.
- Radial Point Easting
-
Specifies the coordinates of the spiral easting.
- Compound
-
Displays True when the spiral has a curve at each end.
- Design Speed
-
Specifies the design speed for each sub-entity.
- Minimum Radius Table
-
Specifies the minimum radius table for each sub-entity. The Minimum Radius Table is defined in the design criteria file.
A
warning symbol is displayed in this cell if the sub-entity radius value is not greater than or equal to the value in the Minimum Radius cell. - Transition Length Table
-
Specifies the minimum transition length table for each sub-entity. The Transition Length Table is defined in the design criteria file.
A
warning symbol is displayed in this cell if the sub-entity length value is not greater than or equal to the value in the Minimum Length cell. - Attainment Method
-
Specifies the superelevation attainment method for each sub-entity. The Attainment Method is defined in the design criteria file.