Use this command when you need to determine if a vertical object, such as traffic light or a tower, can be seen from within a certain radius.
You can also use this command to determine how far a driver can see from a stop line at 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).
This command creates hatch patterns on the current drawing layer to indicate the different levels of visibility.
After the command is completed, the colored areas (hatch patterns) on the surface within the specified radius indicate the following:
Color | Visibility |
---|---|
Green | the entire height of the object is visible |
Yellow | the object is partially visible |
Red | the object is not visible |