Use this tool to do a local sight distance check, for example, at a high risk spot in an intersection.
To check the validity of the designed terrain, this check is typically performed against a finished ground surface, or a composite surface (a corridor surface pasted into an existing ground surface).
A green arrow is displayed if the target is visible from the eye location. The command line displays the distance from the eye to the target.
If the target is not visible from the eye location, the portion of the line of sight that is visible is green and the line beyond the obstruction point is red. A message is displayed at the command line indicating that the line of sight is obstructed. The name of the surface that is causing the obstruction, the obstruction point coordinates, and the distance from the eye to the target are listed.