Does movement on enemy roads use your technology level or that of the enemy?
There are several technologies that improve the uses of roads (crossing rivers with Construction, another that gives +1 to movement on roads). Does a unit traveling on enemy roads (using the Commando promotion) benefit from the technology of his enemy, his own technology, or both? Using the enemy technology level would be the most intuitive and visually consistent, since the ability to cross rivers is called bridge-building, and is represented by tiny bridges graphically. Using your own technology, on the other hand, is more consistent with how units work in general. Which is the case?