Advanced Roundabout
From OpenTTD
3Way junctions
 Basic 3Way
 Line Merge
 Half Cloverleaf
 Half Spaghetti
 Compact 3Way
 Compact 3Way BM Junction
 Ultimate 3way
 Half Transmogrified
 Braided Junction
4Way junctions
 Basic 4Way
 Roundabout
 Cloverleaf
 Spaghetti
 Star
 Complex Star
 BranchMerge
 OverUnder
 Tetrathorp
 High Speed 4Way Flyover/under
 PreSignaled Roundabout
 Advanced Roundabout
 Rightofway Roundabout
 Improved Roundabout
 Transmogrified
 Tightlong
 Deepblue2k8 4way Junction
Enormous junctions
 Multiway/multitrack cloverleaves
 Dual Tetrathorp
 Dual Transmogrified
 Dual BranchMerge
 Quad BranchMerge
 Quad Tetrathorp
 6tuple BranchMerge
 8Way Star
 High Speed 4way
Other junctions
Track Layouts
Unuseful junctions
Unlike the basic roundabout, this junction has 1 level above the default TrackLevel. Trains can pass straight through and turn right without entering the circle.
Some problems are minimized by using presignals
Junction Criteria  


 
Tips

 Area: 14 x 14
Advanced Roundabout without Deadlock
Junction Criteria  


 
Pros:
Cons:

The presignal logic only lets trains enter, when the next and any of the other segments are empty. This ensures that the junction can always be cleared, if the trains fit completely into the segments.
Advanced Roundabout without Deadlock Compact
Junction Criteria  


 
Pros:
Cons:
