Due to the nature of railing being supplied in sections, GuideSIGN Markings inserts a series of blocks of rails but uses a method similar to drawing a line, or polyline using line segments.

1-metre or 2-metre rail panels can be drawn. The user inputs a series of points like drawing a polyline out of line segments. Each time a point is selected, the maximum number of whole 2-metre barriers is added to the drawing and the picked endpoint repositioned to the end of the last railing. If the segment is not long enough for a whole 2m railing then a single 1-metre railing is drawn. There are a number of barrier types available.

The barriers all look the same in plan view (2D symbolic). However, when using the drivers' eye view features the difference can clearly be seen.

Visirail © can have several panel types — V2, V4, or V8 with different rail formations. The representations tab in the KeyProperties dialog will allow the different types to be displayed and viewed in 3D.

All the above refer to pedestrian barrier railing. There are also two crash barrier symbols that can be inserted in a similar way to the pedestrian barrier:

1. TCB barrier: The standard tension corrugated barrier like the Armco used in grand prix racing.
2. OBB barrier: The Open Box Beam, squarer type barrier that is used in situations where less deflection is required than TCB. The line and symbol drawn assumes that the posts will be positioned to the left of the line as drawn. Again, these have 3D elements that are only viewed in DEV.