Dual Branch-Merge Junction
OpenTTD Manual
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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
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

The Dual Branch-Merge Junction is a high speed, high traffic junction. It branches at the beginning of the junction and merges right at the end, allowing more trains into the junction at once, thus preventing deadlock; it does not use sharp turns in order to maximize speed; it has a maximum of two slopes per path. Trains heading straight, turning right, or turning left all have dedicated tracks, which help alleviate traffic.

This junction works best with Realistic acceleration and if trains can choose between the inner and outer tracks just before entering the junction.

This junction is built for speed at the cost of space.

A Dual Branch-Merge Junction (left side traffic version)

A Dual Branch-Merge Junction (right side traffic version)

Pros: Cons: