Stricter Slope Limits
Enforces stricter slope requirements on roads and rail, lowering them from the default allowed 25% slope to the following:
- Small roads: 15%
- Large roads: 10%
- Highways and ramps: 7%
- Trains: 5%.
This brings a lot more challenge to network design, especially in mountainous regions.
Note that this WILL break nearly all ploppable intersections, due to them having steeper slopes.
Also any one of the terraforming mods is highly recommended.