Yes, boats and trailers can be towed on The Toll Roads. If paying with FasTrak, the license plate of the boat or trailer must be registered to your account - which can be done online or by using our free app. California State Highway laws also apply on The Toll Roads, therefore any vehicle pulling a boat or trailer must follow the same rules and regulations as on the regular highways. Boats and trailers cannot be towed on the 91 Express Lanes, the 10-mile tollway in the median of the 91 freeway, which is run by a separate entity.