Overcrowding continues to be a serious challenge that national parks throughout the United States continue grappling with. Some of the more popular national parks have implemented reservation and timed-entry programs, often on a pilot basis, in order to help ease crowding. As 2024 kicks off and travelers plan getaways for the year ahead, it’s important to know which national parks will continue such programs. Here’s a rundown of national parks that are maintaining timed-entry or reservation systems for visits in 2024, per Outside Online. Arches National ParkAt Arches National Park, where visit…