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Basic 3-Way
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Line Merge
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Half Cloverleaf
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Half Spaghetti
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Compact 3-Way
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Compact 3-Way B-M Junction
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Ultimate 3-way
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Half Transmogrified
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Braided Junction
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Basic 4-Way
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Roundabout
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Cloverleaf
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Spaghetti
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Star
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Complex Star
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Branch-Merge
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Tetrathorp
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High Speed 4-Way Fly-over∕under
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Pre-Signaled Roundabout
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Advanced Roundabout
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Right-of-way Roundabout
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Improved Roundabout
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Transmogrified
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Tightlong
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Deepblue2k8 4-way Junction
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Multi-way/multi-track cloverleaves
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Dual Tetrathorp
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Dual Transmogrified
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Dual Branch-Merge
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Quad Branch-Merge
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Quad Tetrathorp
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6-tuple Branch-Merge
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8-Way Star
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High Speed 4-way
Track Layouts Unuseful junctions
The Spaghetti Junction is a step up from the Cloverleaf. It is more complicated and expensive, but smaller and with more exits before merges.
Spaghetti junction (simple)
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Variations
Spaghetti Junction (advanced)
Spaghetti Junction (compact)
Spaghetti Junction with direct West to East underpass
Spaghetti Junction without branches after merges and with direct West to East underpass