High Quality Content by WIKIPEDIA articles! Pakistan has a nationwide network of national highways that are distinct from its motorways. The main difference between the two are that, unlike motorways, national highways are not controlled-access or limited access. As in the case of motorways, Pakistan`s National Highway Authority is responsible for all national highways. National Highways are pre-fixed with the letter `N` followed by a numeral or numerals and a hyphen in between, e.g. N-5.