Trailer Sales, Service, Parts & Rentals. Some RV repair. R&P Carriages is an authorized Interstate, RNR Trailer, and Sure-Trac dealership up to 26,000# GVW serving the Seneca, Illinois area. We are proud to carry a large selection of new and pre-owned inventory. When you are ready to invest in a new cargo trailer, dump trailer, enclosed trailer or utility trailer our friendly and knowledgeable sales, financing, service and parts departments are prepared to make sure your experience is outstanding! Assisting you while you’re making choices to ongoing maintenance and customization. At R&P Carriages, we value the opportunity to create a long term relationship with our customers and we do that by giving you the best customer service around!