Peterbilt Motors Company is an American truck manufacturer specializing in the production of heavy-duty (Class 8) and medium-duty (Classes 5–7) commercial vehicles. The namesake of company founder T. A. "Al" Peterman, it was established in 1939 from the acquisition of Fageol Truck and Motor Company, and has operated as part of PACCAR since 1958. Competing alongside sister division Kenworth Truck Company, it sustains one of the longest-running marketplace rivalries in American truck manufacturing. Peterbilt trucks are identified by a red oval emblem that has been in use since 1953. A "bird"-style hood ornament has also been used on conventional-cab trucks since 1965. Headquartered in Denton, Texas, the company also manufactures trucks at PACCAR facilities in Sainte-Thérèse, Quebec, Canada and Mexicali, Mexico.