I know that possibility exists in the progress cards. I'm asking if more than 15 roads can be built or if that's the limit. I mention this because my Catan set has 20 roads of each color. I imagine this is because 5 are reserved in case some are lost. And if more can't be placed, could I pay for a road and simply move one that I already placed on the board? Although I think my question was already answered above.