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Railway Junctions
Junction Criteria

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
Complex Star
High Speed 4-Way Fly-over/under
Pre-Signaled Roundabout
Advanced Roundabout
Right-of-way Roundabout
Improved Roundabout
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

Right-of-way Depot
Dual tunnels
Sideline U Turn
Right-of-way Lane Change
Right-of-way Merge

Track Layouts

4-Way Triple Axial
4-Way Triple Axial 2
Triple Via Mini
High Hill

Unuseful junctions

3/4ths junction
Ultimate 3-way junction for 4 tracks

The Crossover-Junction is a small junction which can handle a medium amount of traffic. It can be simply built over a mainline without changing too much of it. Only four connections to the mainline are made and the other line stops. To fix this two bridges are built over the original mainline and connected to the other line. A little further two bridges over the new line are made and connected so trains can turn round if they make a wrong turn.

Fig.1 - Crossover-Junction


  • Can handle a few trains.
  • Doesn't take the train much time to clear.
  • Not very difficult to remember.
  • Relatively small.
  • One of the main-lines is barely disturbed.


  • It is possible that a train needs to go up a bridge twice.
  • It can be quite expensive.
  • Many tight turns, depending on how large the junction is built. Train speeds are restricted on the best part of the junction when it is built as small as the example above.
  • Trains slow down when they go over bridges.
  • Trains travelling from the South East are unable to exit to the North East.
  • Trains travelling from the North East are unable to exit to the North West

Other Example Crossover-Junctions

Fig.2 - Crossover - Junction - On 3 Width Track
Fig.3 - Crossover Junction - Short tunnels and gentle turns
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