These options allow you to specify the type of island(s), as well as their characteristics. You can also add islands by indicating existing drawing entities.
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Option
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Description |
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Enter Offsets & Radii / Extract from CAD entities |
Specify the characteristics of islands in the intersection or indicate islands from existing drawing entities.
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Minimum area for islands |
Specify the minimum area of an island in m2. The island will only be inserted into the intersection if it is larger than the minimum area. |
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Island Type
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Select an island type from the list. The options are:
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Apply Kerb |
Select this checkbox to add a kerb to the island(s), and specify the kerb type by clicking the button below to display the Kerb Selector. |
You can specify the slip lane width(s), island radii and tapers, as well as the offset from the edge of the main road.
No island will be inserted into the intersection.
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Option
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Description |
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Ll |
Specify the width of the left slip lane. |
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Lr |
Specify the width of the right slip lane. |
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dM |
Specify the offset of the island from the edge of the main road. |
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RI |
Specify the island corner radius on the side of the intersecting road. |
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RR |
Specify the island corner radius at the junction of the right lane and the intersecting road for the right lane. |
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RL |
Specify the island corner radius at the junction of the left lane and the intersecting road for the left lane. |
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Taper |
Specify the taper of the island in the slip lanes. |
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MTaper |
Specify the taper of the island in the main road. |
You can use existing drawing lines and arcs to define the edges by indicating them.
