I have seen the clue now and how an answer is reached makes sense but does not add up to the answer. None of the names of any Roman roads I know of correspond to the answer
What might have made sense are the words Roman country to indicate that the answer is the Latin name of the country. As the editor of the RT has allegedly given the clue which presumably is exactly as supplied by the compiler then there are two possibilities. The compiler sent in a clue with a serious typo( repeating the word "road" twice or the compiler thought he/she made up the correct clues to reach the answer. If the latter then it reflects badly on the compiler's skills. If the former then all I can presume is that the editor simply communicated what he had received originally and hasn't bothered to check with the compiler, nor spotted that the answer doesn't seem to follow from the clues and neither has the compiler
mop