Line Merge
OpenTTD Manual
Installation · Tutorial
FAQ · Game Interface
Readme.txt
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
Building depots
Dual tunnels
Sideline U Turn
Right-of-way Lane Change
Priority 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

This type of junction is only good for lines where you want trains to go one direction only, from a raw material industry to a production industry or a final industry, for example from a Iron Ore Mine to a Steel Mill or from a Coal Mine to a Power Station. Note that a tunnel was used instead of a bridge. This is because tunnels have no maximum speed. Speed is everything so if you have to build a bridge, build the fastest one you can.

Line Merge Junction

Pros:

Cons:

"Pictures & Rail design tips written by Owen Rudge - please visit his site for more information."

Second Version

Line Merge Junction Second Version

This version is shown here as alternative, but it is by all means worse. In this version mainlines have tunnels where you cannot place signals.