I've a question about road-river crossings.
If I were to paint such a crossing as a ford would it be possible to write the DAT file in such a way that the crossing would only be generated if certain types of road (specifically dirt roads and other low-grade/low-speed roads) crossed non navigable rivers? Other combinations involving modern roads and/or wider, navigable rivers would not generate a crossing at all because a ford in that situation would obviously be unrealistic. The DAT files I've looked at suggest that this isn't possible (i.e. a crossing can only be functional for all road and river types), but I'd be interested if anyone has knowledge of this.