Star Junction
3-Way junctions
- Basic 3-Way
- Line Merge
- Half Cloverleaf
- Half Spaghetti
- Compact 3-Way
- Compact 3-Way B-M Junction
- Ultimate 3-way
- Half Transmogrified
- Braided Junction
4-Way junctions
- Basic 4-Way
- Roundabout
- Cloverleaf
- Spaghetti
- Star
- Complex Star
- Branch-Merge
- Over-Under
- Tetrathorp
- High Speed 4-Way Fly-over/under
- Pre-Signaled Roundabout
- Advanced Roundabout
- Right-of-way Roundabout
- Improved Roundabout
- Transmogrified
- Tightlong
- Deepblue2k8 4-way Junction
Enormous junctions
- Multi-way/multi-track cloverleaves
- Dual Tetrathorp
- Dual Transmogrified
- Dual Branch-Merge
- Quad Branch-Merge
- Quad Tetrathorp
- 6-tuple Branch-Merge
- 8-Way Star
- High Speed 4-way
Other junctions
Track Layouts
Unuseful junctions
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Tips
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Contents |
Variations
Star with Tunnels
Industrial Star
This variation is compact but not especially fast. There are no right-angle turns but left turns are one-tile double bends limited to 55 MPH (88 km/h), as in most less-complex junctions. It is intended to carry a heavy load of industrial trains with great variation in train lengths.
This is a right-hand-running image with signals on the drive side. All signals are standard path except for a single one-way path at each entry. The signaling shown hustles trains through closely, without regard for the possibility of blocking other trains; a more conservative scheme would have fewer signals inside the junction, or none. A combo or block scheme is also possible.
A sufficiently long train (about 11 tiles), making a left-hand turn from, say, the NW-bound main to the SW-bound, that breaks down just after it reserves its exit to the main; can block all traffic NW and SW straight, SE to SW, NW to NE, and of course trains following NW to SW. That is 5 of the possible 12 routes through the junction, the maximum disruption. Shorter trains are able to block fewer routes. Of course, a blocked train may block others, aggravating any jam. Deadlocks, in which a train blocks its own exit or two or more trains block one another's exits, are impossible.
This image reveals the areas underneath the bridges.
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Sunken Star
This has the same character as the Industrial Star but is often faster. Engines pulling up and out of the well may have momentum left over from rolling down and in. Also, while the engine is on the upgrade, cars may be on the downgrade, assisting. This is especially kind to through trains.