The word "or" in there really throws the whole thing off. It was explained to me that to file the first 3 requirements have to be met OR you're a driver with 4 years seniority.
It can not be interpreted this way. It is impossible to satisfy both:
(1) cover a route for a whole week
(2) be prevented from covering a route for a week
Since requirement (1) and (2) are mutually exclusive and the word OR comes after them and before the 3rd condition (4 year driver),
only one of the three conditions need to be met. You cannot meet requirement 1 and 2 at the same time so the OR means only one of the 3 need to be met.