Ultimate 3-way junction for 4 tracks

From OpenTTD

Railway junctions 3-Way junctions Basic 3-Way Line Merge Half Cloverleaf Half Spaghetti Compact 3-Way Compact 3-Way B-M Junction Ultimate 3-way 4-Way junctions Basic 4-Way Roundabout Cloverleaf Spaghetti Star Complex Star Branch-Merge Over-Under Tetrathorp Pre-Signaled Roundabout Advanced Roundabout Right-of-way Roundabout Enormous junctions Double Cloverleaf Dual Tetrathorp Dual Branch-Merge Quad Branch-Merge 8-Way Star Other junctions Right-of-way Depot Dual tunnels Right-of-way Lane Change Unuseful juctions Crossover 3/4ths junction Ultimate 3-way junction for 4 tracks

[edit] Pros

• Traffic jams unlikely.
• Can handle a large number of trains at a time.
• Trains that don't have to take make a turn can go past it.

[edit] Cons

• Some trains must slow down to climb a slope.
• Difficult to build correctly on the first try.
• Sharp turns slow trains down.
• Outer tracks have to run on a higher level than the inner two.
• Takes quite some space.
• Long bridges.

[edit] Tips

• Start by building the "short diagonal" track first.
• The first image above shows the junction without the bridges. Build this first and save the bridges for the last, otherwise you won't be able to see what you're doing.