The National Parks Service (NPS) is proposing a fee hike during peak periods of visitation for select parks to help pay for $11.3 billion worth of needed maintenance. The hike would apply to 17 parks during their busiest five consecutive months of the year, and it would raise NPS revenue by an estimated $70 million per year. During peak visitation periods, selected parks would cost $70 for a car or truck, $50 for a motorcycle, or $30 for a person on bike or foot, according to an NPS press release.