There are many kinds of trailers that serve different purposes. Utility trailers often haul thousands of dollars worth of tools and equipment and recreational vehicles like ATVs and dirt bikes. Many utility trailers will require their own insurance policy, especially if they are used for commercial operation. If you are hauling an open trailer that is carrying a car or furniture, it may be covered under your vehicle's policy. Understanding what type of insurance you need for your trailer can be confusing. It's important to talk to your insurance agent so that you know you have the right insurance in place before you leave for your trip.