Right-of-way Lane Change
From OpenTTD
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
- Transmogrified
- Tightlong
- High Speed 4-way
Enormous junctions
Other junctions
- Right-of-way Depot
- Dual tunnels
- Sideline U Turn
- Right-of-way Lane Change
- Right-of-way Merge
Track Layouts
Unuseful juctions
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.
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.
