Right-of-way Lane Change

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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
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

For multi-lane networks with lots of traffic, sometimes you may want to let trains switch lanes. If one lane backs up, trains can switch to another free lane. However, the lane-switching train might cause a traffic jam behind it in the new lane! With pre-signals, you can make trains wait for an opening in the 2nd lane before merging.

Right-of-way lane change for 10 car trains

In the above picture, train A is stopped due to a jam further ahead. Train B decides to go around it by switching lanes. Train C comes and makes B have to wait to merge. This allows B to not wait in the jam, but also not cause a jam in the 2nd lane.

This junction is very useful before large railway stations.

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