Most likely; an inability to build any improvements *including roads* in anyone else's borders.
You would hope so!

Most likely; an inability to build any improvements *including roads* in anyone else's borders.
In the screenshots thus far, none of the resources appear to be connected by roads, and the roads only go from city to city (except for one or two exceptions where the road just leads out from a lone city to the edge of the cultural borders and then just ends). So Revolution-style city-to-city auto-road-building could very well be the case.
This is kind of a drastic way to reduce road spam, and introduces a lot of questions, such as what happens when an invading army wants to destroy a road tile.
In the screenshots thus far, none of the resources appear to be connected by roads, and the roads only go from city to city (except for one or two exceptions where the road just leads out from a lone city to the edge of the cultural borders and then just ends). So Revolution-style city-to-city auto-road-building could very well be the case.
This is kind of a drastic way to reduce road spam, and introduces a lot of questions, such as what happens when an invading army wants to destroy a road tile.
Good point. I certainly hope this is the case.That's pretty much refuted by the shacknews interview where Schafer reveals that legions will be able to build roads/forts. That wouldn't make sense if it was restricted between cities.
No need to panic (yet), there can be a lot of other reasons for different tile yields. In Civ4, different civics affected different improvements (i.e., Caste System for Workshops) and in Civ5 there could be more stuff we are just not aware of yet. Remember that it's way different game from Civ4.
Roads reducing tile value is such an obviously horrible idea I can't believe sane devs could have implemented that.
it'd be interesteing if the roads decayed and destroyed if you chose not to pay maintenace, mayube even require military every X hexes to prevent bandit raids and other such stuff.
Civs I and II even provided financial incentive to road spam. None of them made a financial disincentive, and so any such disincentive in Civ V is going to be a lot more than the zero we've had to date.
Kerploink? AFAIK they did no such thing.Actually AFAIK in Civ4 roads and railroads contribute to global warming.
Roads reducing tile value is such an obviously horrible idea I can't believe sane devs could have implemented that.
It is totally ridiculous to have an economic model where improving transport infrastructure *lowers* the economic output of a tile.or what else do you mean by horrible?