Right-of-way Roundabout

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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
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

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

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

The Right-of-way Roundabout is a combination of the Right-of-way Depot and Roundabout designs. It uses pre-signals to give priority to trains traveling on the main lines. The lowered areas of this junction create a roundabout large enough to hold four 10-car trains. Trains moving from the mainlines to the roundabout do so after passing through a long branch, so trains waiting to move onto the roundabout do not block the main line. Trains turning right have room to stop and not block the mainline if interrupted by a train exiting the roundabout.

Part of the Right-of-way Roundabout. See complete junction

The picture shows how trains traveling straight through the junction receive preferential treatment, and how merging trains need to wait until the main line is clear.


Junction Criteria
CostExpensive
Construction DifficultyVery Hard
TunnelsYes
BridgesNo
Breakdowns
Broken down trains affect one line or all left turns.
Sharpest Turn1
HillsYes
Split Before MergeYes
Direct PathsYes
Natural TurnsNo
DeadlockYes
LoopsYes
Signal type Pre-Signal
  • Very high capacity.
  • Traffic jams unlikely but possible (left turns).
  • Trains can use the junction to make a U-turn.
  • Requires a large area, 22 x 22. (220 extra square tiles used)
  • Maximum signal distance: 8
  • Minimum tiles between double bend: 1 (diagonal)
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