High Speed 4-Way Fly-over/under

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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
Over-Under
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

Bridge-based

High speed fly-over/under junction.
  • Trains can travel at high speed.
  • Can handle a huge amount of traffic.
  • Can be used on a mainline.
  • Area: 16 x 16

Tunnel-based

Compact

High speed fly-over/under junction tunnels compact.

Symmetric

High speed fly-over/under junction tunnels symmetric.

Using 2-Layer tunnels

High speed fly-over/under junction 2-layer tunnels symmetric.
  • Using this method you don't need the tunnel cross cheat anymore, but the deep tunnels are longer and the signal gap increases by 2 on that line

A variation on this theme

High speed fly-over/under junction variant.
  • Each path nas no more than one downward and upward slope
  • The tightest turns are 1.5 tile wide
  • Area: 15x15
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