The main purpose of this legislative text is to formally disapprove a specific rule proposed by the National Park Service regarding the use of motor vehicles in the Glen Canyon National Recreation Area. This resolution allows Congress to reject the rule, ensuring that it cannot be enforced. The key provision of this resolution is the congressional disapproval of the National Park Service's rule. This means that the regulations concerning motor vehicle use in the Glen Canyon area, as outlined in the Federal Register, will not be implemented.