Special transport achievements

[bobyyy1810]

Hello.
I have a question and I really hope someone who is absolutely certain of this would be able to help me.
I am trying to unlock the achievement driver exceptionnel, and before I was even doing achievements, I've driven around almost the entire map with almost all routers in yellow ( explored ). Now, if I want to unlock the achievement, MUST I drive the special transport on those routers or does it count that I've already driven there and the entire route is explored before? ( Either by free roam or multiple routes for cargo )
Hoping for a certain answer, thank you!

[Madkine]

The route being explored is irrelevant. You must complete each Special Transport delivery once.