(1) a law enforcement officer or emergency services personnel acting within the course and scope of their employment;
(2) an employee of the landowner or land manager acting within the course and scope of their employment;
(3) a person otherwise authorized to use a motor vehicle in a closed area by legal right or by permission of the landowner or land manager; and
(4) a person operating a motor vehicle on an R.S. 2477 right-of-way recorded or asserted by the state or a local highway authority.