Roundabout Properties: Arm: Crossing

Pedestrian crossings are often located at roundabout entry/exit points because the traffic is moving slowest here.

Expand an arm and click Crossing in the left-hand pane. The Crossing pane is displayed.

Use the Crossing tickbox to enable or disable a crossing.

The crossing pane is divided into entry crossing and exit crossing.

For each of the two lane crossing sections, the Crossing Type may be set to any of the following:

• Signalised Pedestrian/Equestrian
• Signalised Pedestrian (Detector)
• Signalised Pedestrian (Non-Detector)
• Unsignalised Pedestrian
• Unsignalised Pedestrian/Cycle

In the UK, these are also known respectively as:

• Pegasus
• Puffin
• Pelican
• Zebra
• Toucan

The Offset from Entry Intersection is measured along the offside (or splitter) definition line from the intersection of that line and the inscribed circle.

The Entry Crossing Width is measured perpendicular to the angle of the crossing.

The Crossing Angle is measured relative to a line perpendicular to the offside definition line. Rotation is positive when the crossing is turned away from the roundabout. In most cases, the angle will be zero since this represents the shortest crossing distance.

You can link the entry and exit crossings by setting the Exit Crossing Type to Synchronise to Entry (Mirrored) or Synchronise to Entry (Projected). In both cases, the entry and exit crossing offsets change when you adjust the entry offset, but the handling of the exit crossing angle varies slightly:

• If you select Synchronise to Entry (Mirrored), the entry and exit crossing angles are identical relative to the normals to the entry and exit splitter definition lines.
• If you select Synchronise to Entry (Projected), the entry crossing is projected in the same direction across the exit lanes.

Note: In this mode, the exit fields are disabled.

In all cases the Max and Min values represent the limiting values from the adopted design standard.