Sleeping in your car is not allowed within Rocky Mountain National Park, except in designated campgrounds where you have a reservation for a campsite. Overnight parking outside of campgrounds is typically restricted to trailhead parking lots for backcountry campers with a valid backcountry permit. In these cases, you are still not permitted to sleep in your vehicle; you must set up camp in the designated backcountry campsite specified in your permit. If you wish to sleep in your car or RV, you will need to find a suitable campground, either within the park that accommodates RVs or outside the park boundaries. Be aware that the park’s campgrounds do not offer hookups for RVs.