Road objects cannot be placed until a terrain perimeter exists. See "Terrain Tools".
When road objects are first placed into your plan, their initial dimensions and properties are controlled by their default settings. See "Road and Sidewalk Defaults".
Once road objects have been placed, they can be edited individually or as a group. See "Editing Road Objects".
Roads created with the Road tools have a consistent width that can be defined in the Road Specification dialog.
The elevation of a road is flat along its width, which makes it an ideal tool for creating roads on terrain with relief.
To place a road without any curves, select Terrain> Roads and Sidewalks> Straight Road and click and drag to draw a line in floor plan view. Multiple road sections can be connected together.
Roads are edited alone their center line like CAD lines and polylines. See "Line Tools".
Use Terrain> Roads and Sidewalks> Spline Road 
to draw a curved road. Spline roads are drawn and edited like CAD splines. See "Splines".
A polyline can be used to model roads of any shape. It is ideal for creating parking lots and other non-linear road surfaces. Roads created with the Polyline Road 
tool conform to the surface of the terrain beneath them.
To place a road polyline select Terrain> Roads and Sidewalks> Polyline Road 
and click and drag to draw a rectangular polyline in floor plan view.
Road Polylines are edited alone their center line like polylines. See "Polylines".
A median is a polyline that can be used within a road. The median is made of the same material as the terrain beneath it and has a curb if the road that encompasses it has one.
To place a median select Terrain> Road> Median 
and click and drag to draw a rectangular polyline in floor plan view. Road median polylines must be contained within a road.
Road medians are edited just like CAD polylines. See "Polylines".
Polylines can be converted to road medians. See "Converting Objects".
A driveway is a road without a curb. A driveway cuts out a curb wherever it meets a road or a road polyline. Like a road, the elevation of a driveway is flat across its width.
To place a driveway select Terrain> Roads and Sidewalks> Driveway 
and click and drag to draw a line in floor plan view. Multiple driveway sections can be connected together.
Driveways are edited alone their center line like CAD lines and polylines. See "Line Tools".
A Cul-de-sac is a road polyline in a predetermined shape. A cul-de-sac follows the surface of the terrain beneath it.
To place a cul-de-sac select Terrain> Roads and Sidewalks> Cul-de-sac 
and click a road end where you would like a cul-de-sac. Culs-de-sac cannot be placed on road polylines.
Culs-de-sac can be edited just like CAD polylines. See "Polylines".
The Road Stripe tool allows you to paint lines on a road surface.
To place a road stripe select Terrain> Roads and Sidewalks> Road Stripe 
and click and drag to draw a line within a road in floor plan view. Multiple road stripes can be connected together.
Road Stripes are edited like CAD lines. See "Line Tools".
A Road Marking paints polylines on a road surface, allowing any shape to be created.
To place a road marking select Terrain> Road> Road Marking 
and click and drag to draw a rectangular polyline within a road in floor plan view.
Road markings are edited like CAD polylines. See "Polylines".
Use the sidewalk tools to model sidewalks on a building site. Sidewalks have a consistent width that can be defined in the Sidewalk Specification dialog. Sidewalks cut out curbs and gutters wherever they meet a road or a road polyline. The elevation of a sidewalk is flat across the its width.
To draw a sidewalk with no curves, select Terrain> Roads and Sidewalks> Straight Sidewalk 
and click and drag to draw a line in floor plan view. Multiple sidewalk sections can be connected together.
Sidewalks are edited alone their center line like CAD lines and polylines. See "Line Tools"..
Use the Spline Sidewalk tool to create a curved sidewalk.Select Terrain> Roads and Sidewalks> Spline Sidewalk. Spline roads are drawn and edited like CAD splines. See "Splines".
Use the polyline sidewalk tool to create a sidewalk of any shape. Sidewalk polylines conform to the surface of the terrain beneath them.
To place a sidewalk polyline select Terrain> Road> Sidewalk Polyline 
and click and drag to draw a rectangular polyline in floor plan view.
Sidewalk polylines are edited just like CAD polylines. See "Polylines".
Select a road or median and click the Auto Generate Sidewalk 
edit button to open the Auto Generate Sidewalks dialog.
Left/Right Side of Road - Check one or both boxes to generate a sidewalk on the selected road object.
All Connected Roads - Check this box to generate a sidewalk along all other roads connected to the selected road object.
Offset From Road - Specify a gap between the generated sidewalk and the selected road object.
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