Dirt Roads/Paved Roads

[narwan]

A dirt road is basically nothing more than fairly flat clear terrain with almost no vegetation. The way to mimic that in the game is to create a trail of earth hexes through other terrain (clear, grass, woods, etc). But that's mostly for maps you generate yourself.
Dirt roads in reality fall between the secondary roads and the clear/earth terrain in the game. For 'high quality' dirt roads the secondary road will do fine while for 'low quality' dirt roads (after rain perhaps or a trail type of dirt road through harder terrain) the earth type will be the better choice.

Narwan